Tag Archives: hydraulic coupling

China Best Sales Coupling Fluid Hydraulic Fluid Drive Roller Chain Jaw Spider Rubber Flexible Jaw Disc Aluminum Stainless Steel Coupling

Product Description

          Coupling Fluid Hydraulic Fluid Drive Roller Chain Jaw Spider Rubber Flexible Jaw Disc Aluminum Stainless Steel Coupling

Application of Fluid Coupling

A flexible coupling is a mechanical device that connects 2 shafts that may not be perfectly aligned. It allows for misalignment in both the axial and angular directions, and it also helps to absorb shock and vibration. Flexible couplings are used in a variety of applications, including:

  • Machine tools: Flexible couplings are used in machine tools to connect the motor to the workpiece. This allows for misalignment between the motor and the workpiece, which can occur due to thermal expansion or vibration.
  • Conveyors: Flexible couplings are used in conveyors to connect the drive motor to the conveyor belt. This allows for misalignment between the motor and the conveyor belt, which can occur due to the weight of the belt or the unevenness of the floor.
  • Wind turbines: Flexible couplings are used in wind turbines to connect the generator to the turbine blades. This allows for misalignment between the generator and the turbine blades, which can occur due to the wind.
  • Pumps: Flexible couplings are used in pumps to connect the motor to the pump shaft. This allows for misalignment between the motor and the pump shaft, which can occur due to the weight of the pump or the unevenness of the fluid being pumped.
  • Other applications: Flexible couplings are also used in a variety of other applications, such as:
    • Air compressors: Flexible couplings are used in air compressors to connect the motor to the compressor shaft. This allows for misalignment between the motor and the compressor shaft, which can occur due to the weight of the compressor or the unevenness of the air being compressed.
    • Fans: Flexible couplings are used in fans to connect the motor to the fan blade. This allows for misalignment between the motor and the fan blade, which can occur due to the weight of the fan or the unevenness of the air being circulated.
    • Mixers: Flexible couplings are used in mixers to connect the motor to the mixer shaft. This allows for misalignment between the motor and the mixer shaft, which can occur due to the weight of the mixer or the unevenness of the material being mixed.

Flexible couplings are a versatile and useful tool that can be used in a variety of applications. They are an efficient and effective way to connect 2 shafts that may not be perfectly aligned.

fluid coupling

Impact of Fluid Coupling on the Overall Reliability of a Power Transmission System

A fluid coupling can significantly contribute to the overall reliability of a power transmission system in various ways:

  • Smooth Power Transmission: Fluid couplings facilitate smooth power transmission between the driving and driven components, minimizing shocks and vibrations during startup and operation. This reduces the risk of sudden failures or damages to connected equipment.
  • Overload Protection: Fluid couplings offer inherent overload protection by allowing controlled slip during sudden load changes or overloads. This protects the system from excessive stresses and prevents damage to the motor and driven machinery.
  • Reduced Mechanical Wear: The smooth operation of fluid couplings reduces mechanical wear on connected components, such as gearboxes, belts, and chains. This results in longer service life and decreased maintenance requirements.
  • Increased Equipment Life: By reducing stress and wear on the entire power transmission system, fluid couplings can extend the service life of motors, gearboxes, and other components. This enhances the overall reliability of the system over an extended period.
  • Enhanced System Safety: The ability of fluid couplings to protect against shock loads and overloads enhances the safety of personnel working with or near the machinery. It prevents sudden and unpredictable movements, reducing the risk of accidents and injuries.
  • Stable Performance: Fluid couplings maintain a constant speed ratio between the driving and driven shafts, ensuring stable and predictable performance of the power transmission system. This predictability aids in maintaining process stability and efficiency.

Incorporating a properly sized and selected fluid coupling into a power transmission system can improve its reliability, reduce downtime, and prevent costly breakdowns. Regular maintenance and monitoring of the fluid coupling also play a crucial role in ensuring long-term reliability and trouble-free operation.

fluid coupling

Cost Implications of Using Fluid Couplings in Comparison to Other Power Transmission Methods

The cost implications of using fluid couplings in power transmission depend on various factors, including the application requirements, the size of the system, and the operational conditions. While fluid couplings offer several advantages, they may have different cost considerations compared to other power transmission methods like mechanical clutches, VFDs (Variable Frequency Drives), and direct mechanical drives.

1. Initial Investment:

The initial cost of a fluid coupling can be higher than that of a mechanical clutch or a direct mechanical drive. Fluid couplings contain precision components, including the impeller and turbine, which can impact their initial purchase price.

2. Maintenance Costs:

Fluid couplings are generally considered to have lower maintenance costs compared to mechanical clutches. Mechanical clutches have wear and tear components that may require more frequent replacements, leading to higher maintenance expenses over time.

3. Energy Efficiency:

Fluid couplings are highly efficient in power transmission, especially during soft-start applications. Their ability to reduce shock loads and provide a smooth acceleration can result in energy savings and operational cost reductions.

4. Space and Weight:

Fluid couplings are usually more compact and lighter than some mechanical clutches, which can be advantageous in applications with space constraints or weight limitations.

5. Specific Application Considerations:

The suitability and cost-effectiveness of fluid couplings versus other power transmission methods can vary based on specific application requirements. For example, in soft-start applications, fluid couplings may be the preferred choice due to their ability to reduce mechanical stress and protect connected equipment.

6. Lifespan and Reliability:

While the initial cost of a fluid coupling might be higher, their longevity and reliability can lead to lower overall life cycle costs compared to other power transmission methods.

In conclusion, the cost implications of using fluid couplings in power transmission depend on the particular application and the total cost of ownership over the equipment’s lifespan. Although fluid couplings may have a higher initial investment, their long-term reliability, energy efficiency, and lower maintenance costs can make them a cost-effective choice in many industrial applications.

fluid coupling

What is a Fluid Coupling and How Does It Work?

A fluid coupling is a type of hydraulic device used to transmit torque and power between two shafts without direct mechanical contact. It consists of three main components: the impeller, the turbine, and the housing. Fluid couplings are commonly used in various industrial applications, such as heavy machinery, conveyors, and automotive drivetrains.

Working Principle: The fluid coupling operates based on the principle of hydrodynamic power transmission. It uses a hydraulic fluid (usually oil) to transfer torque from the driving shaft (input) to the driven shaft (output).

1. Impeller: The impeller is mounted on the input shaft and is connected to the prime mover (e.g., an electric motor or an engine). When the prime mover rotates the impeller, it creates a swirling motion in the hydraulic fluid.

2. Turbine: The turbine is connected to the output shaft and is responsible for transmitting the torque to the driven system. The swirling motion of the hydraulic fluid generated by the impeller causes the turbine to rotate.

3. Fluid Filling: The area between the impeller and the turbine is filled with hydraulic fluid. As the impeller rotates, it creates a vortex in the fluid, which in turn causes the turbine to rotate.

4. Fluid Coupling Working: As the impeller and turbine are enclosed in the housing, the hydraulic fluid transfers rotational energy from the impeller to the turbine without any direct physical connection. The fluid coupling allows some slip between the impeller and the turbine, which enables smooth torque transmission, dampens shock loads, and provides overload protection.

5. Slip: Under normal operating conditions, there is a slight speed difference (slip) between the impeller and the turbine. This slip allows the fluid coupling to absorb shock loads and dampen vibrations, protecting the connected machinery from sudden jolts and overloads.

Fluid couplings are advantageous in applications where a gradual start-up and controlled acceleration are required. They provide a smoother and more flexible power transmission compared to direct mechanical couplings like gear couplings or belt drives.

However, it’s important to note that fluid couplings have some energy loss due to the slip, which can result in reduced efficiency compared to direct mechanical couplings like gear couplings or belt drives.

China Best Sales Coupling Fluid Hydraulic Fluid Drive Roller Chain Jaw Spider Rubber Flexible Jaw Disc Aluminum Stainless Steel Coupling  China Best Sales Coupling Fluid Hydraulic Fluid Drive Roller Chain Jaw Spider Rubber Flexible Jaw Disc Aluminum Stainless Steel Coupling
editor by CX 2023-11-16

China Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings

Product Description

Fluid coupling 

Product Application

Improve the starting capability of electric motor, protect motor against overloading, damp shock, load fluctuation and torsional vibration, and balance and load distribution in case of multimotor drives.Belt conveyers, csraper conveyers, and conveyers of all kinds Bucket elevators, ball mills, hoisters, crushers, excavators, mixers, straighteners, cranes, etc.

Main Features

1. Applies to flexible drive shaft ,allowing a larger axial radial displacement and displacement.
2.Has a simple structure,easy maintenance .
3.Disassembly easy
4.low noise
5.Transmission efficiency loss,long useful working life.

 

Related Products

       
Our Company

Ever-power Group specialist in making all kinds of mechanical transmission and hydraulic transmission like: planetary gearboxes, worm reducers, in-line helical gear speed reducers, parallel shaft helical gear reducers, helical bevel reducers, helical worm gear reducers, agricultural gearboxes, tractor gearboxes, auto gearboxes, pto shafts, special reducer & related gear components and other related products, sprockets, hydraulic system, vacuum pumps, fluid coupling, gear racks, chains, timing pulleys, udl speed variators, v pulleys, hydraulic cylinder, gear pumps, screw air compressors, shaft collars low backlash worm reducers and so on. furthermore, we can produce customized variators, geared motors, electric motors and other hydraulic products according to customers’ drawings.

We provides a reliable grantee for the product’ s quality by advanced inspection and testing equipment. professional technical team, exquisite processing technology and strict control system. 
In recent years, the company has been developing rapidly by its rich experience in production, advanced management system, standardized management system, strong technical force. We always adhere the concept of survival by quality, and development by innovation in science and technology. 
Our Group is willing to work with you hand in hand and create brilliance together! 

Material available
Low carbon steel, C45, 20CrMnTi, 42CrMo, 40Cr, stainless steel. Can be adapted regarding customer requirements.
Surface treatment
Blacking, galvanization, chroming, electrophoresis, color painting, …

 

Heat treatment
High frequency quenching heat treatment, hardened teeth, carbonizing, nitride, …
 
Certifications
FAQ:

Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment.

Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.

If you have another question, please feel free to contact us.

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fluid coupling

Key Parameters in Designing a Fluid Coupling System

Designing a fluid coupling system requires careful consideration of various parameters to ensure optimal performance and efficiency. Here are the key parameters to take into account:

  • Power Rating: Determine the power requirements of the connected equipment to select a fluid coupling with an appropriate power rating. Undersized couplings may lead to overheating and premature wear, while oversized couplings can result in energy losses.
  • Input and Output Speeds: Consider the rotational speeds of the input and output shafts to ensure the fluid coupling can accommodate the desired speed range without slipping or exceeding its limitations.
  • Torque Capacity: Calculate the maximum torque expected in the system and choose a fluid coupling with a torque capacity that exceeds this value to handle occasional overloads and prevent damage.
  • Fluid Viscosity: The viscosity of the fluid inside the coupling affects its torque transmission capabilities. Select a fluid viscosity suitable for the application and operating conditions.
  • Start-Up and Load Conditions: Analyze the start-up torque and load variations during operation. The fluid coupling should be capable of handling these conditions without excessive slip or stress on the drivetrain.
  • Environmental Factors: Consider the ambient temperature, humidity, and potential exposure to contaminants. Ensure the fluid coupling’s materials and sealing mechanisms can withstand the environmental conditions.
  • Size and Weight: Optimize the size and weight of the fluid coupling to minimize space requirements and facilitate installation and maintenance.
  • Torsional Resonance: Evaluate torsional resonances in the system and select a fluid coupling with appropriate damping characteristics to mitigate vibrations.
  • Overload Protection: Determine if overload protection features, such as slip or torque limiting, are necessary to safeguard the connected equipment from damage.
  • Compatibility: Ensure the fluid coupling is compatible with the specific application, including the type of driven equipment, its mechanical characteristics, and any other interrelated components in the drivetrain.
  • Operational Costs: Consider the long-term operational costs, maintenance requirements, and efficiency of the fluid coupling to optimize the overall lifecycle cost of the system.
  • Safety Standards: Adhere to relevant safety standards and regulations in the design and installation of the fluid coupling system to ensure safe and reliable operation.

By carefully evaluating these parameters and selecting a fluid coupling that aligns with the specific requirements of the application, engineers can design a reliable and efficient fluid coupling system for various industrial and power transmission applications.

fluid coupling

Role of Fluid Coupling in Reducing Mechanical Stress on Connected Equipment

A fluid coupling is a mechanical device used to transmit power between two shafts without direct physical contact. It plays a crucial role in reducing mechanical stress on connected equipment, offering several benefits in various industrial applications. Here’s how a fluid coupling achieves this:

  • Smooth Power Transmission: Fluid couplings use hydraulic principles to transmit torque. When the input shaft (driving shaft) rotates, it imparts motion to the fluid inside the coupling. The fluid transmits torque to the output shaft (driven shaft) through the hydraulic coupling, resulting in smooth and gradual power transmission. This eliminates sudden jerks and mechanical shocks that could otherwise lead to increased stress on connected equipment.
  • Damping Effect: Fluid couplings act as a damping element, absorbing vibrations and torsional oscillations from the driving shaft. This damping effect helps reduce mechanical stress on connected equipment by mitigating the impact of sudden load changes and torsional vibrations that may occur during start-ups, shut-downs, or varying operating conditions.
  • Torque Limiting: In high-load situations, a fluid coupling can provide torque limiting capabilities. When the load exceeds a certain threshold, the fluid coupling slips, preventing excessive torque from reaching the driven shaft. This feature acts as a protective mechanism, preventing overloading and mechanical stress on both the coupling and connected equipment.
  • Shock Absorption: In applications where shock loads or overloads are common, a fluid coupling can absorb and dampen the impact of such events. This ability to cushion shocks prevents abrupt changes in torque and rotational speed, reducing mechanical stress and potential damage to the equipment.
  • Speed Control: In certain applications, fluid couplings can facilitate speed control of the driven shaft by adjusting the amount of fluid in the coupling. The ability to control the speed of connected equipment without abrupt changes contributes to smoother operation and lower mechanical stress.

By incorporating a fluid coupling into a power transmission system, mechanical stress on connected equipment can be significantly reduced, leading to improved equipment reliability, extended component life, and reduced maintenance costs. Fluid couplings are commonly used in heavy machinery, conveyors, crushers, mining equipment, marine propulsion systems, and various other industrial applications where smooth and controlled power transmission is critical.

It is important to select the appropriate fluid coupling size, type, and features based on the specific application requirements to ensure optimal performance and stress reduction. Regular maintenance and adherence to the manufacturer’s guidelines are essential to preserve the benefits of using fluid couplings and maintain their effectiveness in reducing mechanical stress on connected equipment.

fluid coupling

Selecting the Right Size of Fluid Coupling for Your Application

To ensure optimal performance and efficiency, it’s essential to choose the right size of fluid coupling for a specific application. Here are the key steps in the selection process:

  1. Identify the Application Requirements: Understand the torque and power requirements of your application. Determine the maximum torque and power that the fluid coupling needs to transmit to meet the operational demands of the machinery or equipment.
  2. Check the Speed Range: Consider the speed range of your application. Ensure that the fluid coupling can operate effectively within the desired speed range, providing adequate torque transfer across the entire speed spectrum.
  3. Consider the Fluid Coupling Type: Choose the appropriate type of fluid coupling based on the specific needs of your application. Hydrodynamic fluid couplings are suitable for applications requiring smooth and gradual torque transmission, while constant-fill fluid couplings are more suitable for applications where some slip is acceptable.
  4. Calculate the Service Factor: Determine the service factor, which accounts for any additional loads or impacts the fluid coupling may experience during operation. Multiply the maximum torque requirement by the service factor to obtain the design torque.
  5. Refer to Manufacturer Data: Consult the manufacturer’s data sheets and specifications for various fluid coupling models. Compare the design torque with the torque capacity of different fluid coupling sizes to find the most suitable match for your application.
  6. Consider Safety Margins: It’s advisable to apply safety margins to ensure reliable operation. Select a fluid coupling with a torque capacity higher than the calculated design torque to account for potential variations in load or operating conditions.
  7. Verify Space Constraints: Ensure that the selected fluid coupling fits within the available space in your machinery or equipment, considering any installation restrictions or dimensional limitations.

By following these steps and carefully evaluating the requirements of your specific application, you can select the right size of fluid coupling that will deliver optimal performance, efficiency, and reliability.

China Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings  China Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings
editor by CX 2023-11-10

China Best Sales CZPT Customized Scraper Hydraulic Coupling, Torque Limiting Fluid Coupling

Product Description

Densen Customized Scraper hydraulic coupling,pressure relief type hydraulic coupling,torque limiting fluid coupling

 

Product Name Scraper hydraulic coupling,pressure relief type hydraulic coupling,torque limiting fluid coupling
DN mm 16~190mm
Rated Torque 40~25000 N·m
Allowable speed 4500~200 kN·m
Material 45#steel,aluminum
Application Widely used in metallurgy, mining, engineering and other fields.

 

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Company Information

Equipment

 

Application Case

Typical case of diaphragm coupling applied to variable frequency speed control equipment

JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant

According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.

It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.

Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.

 

Other Application Case

 

Spare parts

 

Packaging & Shipping

 

Contact us

fluid coupling

Can you explain the Concept of Slip in a Fluid Coupling?

In a fluid coupling, slip refers to the relative speed difference between the impeller and the runner. When the impeller, which is connected to the driving shaft, rotates, it induces the flow of hydraulic fluid inside the coupling. This fluid flow in turn drives the rotation of the runner, which is connected to the driven shaft.

However, due to the operating principle of fluid couplings, there is always a certain amount of slip between the impeller and the runner. This slip occurs because the fluid coupling needs to allow for a small speed difference in order to transmit torque smoothly.

During startup or under heavy load conditions, the impeller’s rotational speed may be slightly higher than the runner’s rotational speed. This speed difference causes the hydraulic fluid to circulate between the impeller and the runner, generating hydrodynamic forces that transmit torque from the driving shaft to the driven shaft.

Slip is an inherent and controlled characteristic of fluid couplings, and it is essential for their smooth operation. However, excessive slip can lead to energy losses and reduced efficiency. Therefore, fluid couplings are designed to have an optimal slip value for specific applications, balancing the need for torque transmission and energy efficiency.

fluid coupling

Special Considerations for Using Fluid Couplings in Explosive Environments

Fluid couplings are widely used in various industrial applications, including those in potentially explosive environments. When considering the use of fluid couplings in such settings, several special considerations must be taken into account to ensure safety and compliance with regulations:

  • Explosion-Proof Design: Fluid couplings used in explosive environments must be designed to prevent the ignition of flammable gases or vapors. They should adhere to explosion-proof standards and be equipped with robust seals and protective enclosures to contain any potential sparks or flames.
  • Ingress Protection: An appropriate ingress protection (IP) rating is essential to prevent dust, moisture, or other hazardous substances from entering the fluid coupling. A higher IP rating ensures greater protection against potential sources of ignition.
  • Material Selection: The choice of materials for the fluid coupling is crucial in explosive environments. Non-sparking or anti-static materials should be used to reduce the risk of ignition caused by friction or electrical discharge.
  • Temperature Limitations: Fluid couplings operating in explosive environments must have temperature ratings that prevent overheating and potential ignition of flammable substances. The fluid coupling should be adequately cooled to maintain safe operating temperatures.
  • Monitoring and Maintenance: Regular monitoring and maintenance of fluid couplings in explosive environments are essential. Periodic inspections can detect potential issues or wear that could compromise the safety of the coupling. Any maintenance or repair work should be carried out by qualified personnel following safety protocols.
  • Compliance with Regulations: Depending on the industry and location, there may be specific regulations and safety standards that govern the use of equipment in explosive atmospheres. It is crucial to adhere to these regulations and ensure that the fluid coupling complies with all relevant safety requirements.

Fluid couplings used in explosive environments play a vital role in ensuring the safe and reliable operation of industrial machinery. By providing smooth and controlled power transmission, fluid couplings can help minimize risks and improve the overall safety of the equipment and personnel in these hazardous settings.

Before implementing fluid couplings in explosive environments, it is essential to conduct a thorough risk assessment and consult with experts familiar with the specific safety requirements of the industry. By taking appropriate safety measures and selecting suitable explosion-proof fluid couplings, the risks associated with using power transmission equipment in hazardous areas can be effectively mitigated.

fluid coupling

Disadvantages and Limitations of Fluid Couplings

While fluid couplings offer numerous advantages, they also have some disadvantages and limitations that should be considered for specific applications:

  • Power Loss: Fluid couplings introduce a power loss due to the slip that occurs during power transmission. This power loss can reduce the overall efficiency of the system, especially in applications with high-speed variations.
  • Torque Multiplication: Unlike torque converters, fluid couplings have limited torque multiplication capabilities. They do not provide as much torque increase at low speeds, which may be necessary for certain heavy-load applications.
  • Temperature Sensitivity: Fluid couplings are sensitive to temperature changes. In extremely hot or cold conditions, the viscosity of the fluid may vary, affecting the coupling’s performance.
  • Fluid Contamination: Contaminants in the fluid can adversely affect the performance and lifespan of the fluid coupling. Regular maintenance and monitoring of the fluid quality are essential to prevent potential issues.
  • Speed Limitations: Fluid couplings may have speed limitations in certain applications. High-speed operations can lead to centrifugal forces that may affect the coupling’s behavior.
  • Complexity in Control: In some cases, controlling the output speed of the fluid coupling can be more challenging compared to other types of couplings. This complexity may require additional control mechanisms.
  • Cost: Fluid couplings can be more expensive than some mechanical couplings, such as belt and chain drives. The initial cost and ongoing maintenance expenses should be considered in the selection process.

Despite these limitations, fluid couplings remain a popular choice in many industrial applications, thanks to their smooth power transmission, overload protection, and torsional vibration damping capabilities. The decision to use a fluid coupling should be based on a thorough understanding of the specific requirements and operating conditions of the machinery or equipment.

China Best Sales CZPT Customized Scraper Hydraulic Coupling, Torque Limiting Fluid Coupling  China Best Sales CZPT Customized Scraper Hydraulic Coupling, Torque Limiting Fluid Coupling
editor by CX 2023-10-16

China Hot selling CZPT Customized Fluid Coupling for Conveyor, Hydraulic Gear Fluid Coupling

Product Description

Densen Customized fluid coupling for conveyor, hydraulic gear fluid coupling,limited torque fluid coupling

Product Name Densen Customized fluid coupling for conveyor, hydraulic gear fluid coupling,limited torque fluid coupling
DN mm 225~1312mm
Rated Torque 2000~11950000N·m
Allowable speed 1500~3000 RPM
Material 35CrMo/ZG270/45# steel/Aluminum alloy
Application Widely used in metallurgy, mining, engineering and other fields.

Company Information

Equipment

 

Application Case

Typical case of diaphragm coupling applied to variable frequency speed control equipment

JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant

According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.

It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.

Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.

 

Other Application Case

 

Spare parts

 

Packaging & Shipping

 

Contact us

fluid coupling

Can you explain the Concept of Slip in a Fluid Coupling?

In a fluid coupling, slip refers to the relative speed difference between the impeller and the runner. When the impeller, which is connected to the driving shaft, rotates, it induces the flow of hydraulic fluid inside the coupling. This fluid flow in turn drives the rotation of the runner, which is connected to the driven shaft.

However, due to the operating principle of fluid couplings, there is always a certain amount of slip between the impeller and the runner. This slip occurs because the fluid coupling needs to allow for a small speed difference in order to transmit torque smoothly.

During startup or under heavy load conditions, the impeller’s rotational speed may be slightly higher than the runner’s rotational speed. This speed difference causes the hydraulic fluid to circulate between the impeller and the runner, generating hydrodynamic forces that transmit torque from the driving shaft to the driven shaft.

Slip is an inherent and controlled characteristic of fluid couplings, and it is essential for their smooth operation. However, excessive slip can lead to energy losses and reduced efficiency. Therefore, fluid couplings are designed to have an optimal slip value for specific applications, balancing the need for torque transmission and energy efficiency.

fluid coupling

Safety Features in Modern Fluid Coupling Designs

Modern fluid coupling designs incorporate various safety features to ensure the reliable and secure operation of the equipment. Here are some of the key safety features commonly found in modern fluid couplings:

1. Overload Protection: One of the primary safety features in modern fluid couplings is overload protection. In the event of an abrupt increase in load or torque, the fluid coupling slips, absorbing the excess torque and preventing damage to the connected equipment. This feature safeguards against mechanical failures and protects the machinery.

2. Torque Limiting: Fluid couplings are designed with torque limiting capabilities, which allow them to control the maximum torque transmitted to the driven equipment. By setting the torque limit within a safe operating range, the fluid coupling prevents excessive stresses on the system, ensuring longevity and reliability.

3. Automatic Overheat Protection: Some fluid couplings are equipped with automatic overheat protection mechanisms. If the fluid coupling’s operating temperature exceeds a predefined threshold, the protection system disengages the coupling temporarily until the temperature returns to a safe level. This prevents damage due to overheating and enhances safety.

4. Backstop or Holdback Device: In certain applications where reverse rotation is a concern, fluid couplings may include a backstop or holdback device. This feature prevents the driven equipment from rotating in the opposite direction, enhancing safety during sudden stops or reversals.

5. Fail-Safe Operation: Many modern fluid couplings are designed to operate in a fail-safe manner. In the event of any malfunction or failure, the coupling defaults to a safe mode, allowing the equipment to continue operating at reduced capacity or gradually shut down, avoiding catastrophic failures.

6. Seal Protection: Proper sealing is crucial for fluid couplings, especially in harsh environments. Modern designs often include advanced seal protection features to prevent oil leakage and contamination, ensuring environmental safety and reducing maintenance requirements.

7. Low Noise and Vibration: Reduced noise and vibration levels in fluid couplings contribute to operator safety and comfort. The damping properties of the fluid coupling help minimize vibrations, creating a quieter and more stable working environment.

8. Emergency Stop Capability: Some fluid couplings may have emergency stop provisions to quickly disengage the coupling in critical situations. This feature allows for rapid shutdowns in emergencies, preventing accidents and protecting personnel.

9. Condition Monitoring: Advanced fluid coupling designs may include condition monitoring capabilities. This allows operators to monitor the coupling’s performance, temperature, and other parameters in real-time, facilitating predictive maintenance and avoiding unexpected failures.

Overall, the incorporation of these safety features in modern fluid coupling designs ensures the protection of machinery, operators, and the surrounding environment. These safety measures enhance the reliability, efficiency, and longevity of equipment, making fluid couplings a safe and valuable choice for power transmission in various industrial applications.

fluid coupling

Advantages of Using Fluid Couplings in Power Transmission Systems

Fluid couplings offer several advantages in power transmission systems, making them well-suited for various industrial applications. Here are some of the key benefits:

  • Smooth Power Transmission: Fluid couplings provide a smooth and gradual transfer of power from the engine or motor to the driven load. This helps to reduce shock and stress on the entire powertrain, leading to smoother operation and extended equipment life.
  • Overload Protection: Fluid couplings act as a mechanical fuse in power transmission systems. When the load exceeds a certain threshold, the fluid coupling will slip, preventing excessive torque from reaching the driven load and protecting the machinery from damage.
  • Torsional Vibration Damping: They effectively dampen torsional vibrations, reducing the risk of resonance and fatigue failure in the drivetrain. This is particularly important in applications with varying loads and speeds.
  • No Mechanical Wear: Fluid couplings have no physical contact between the input and output components, resulting in minimal mechanical wear. This characteristic reduces maintenance and extends the service life of the coupling.
  • Simple Design: The design of fluid couplings is relatively simple compared to other mechanical power transmission devices, leading to lower manufacturing costs and ease of maintenance.
  • Energy Efficiency: In certain operating conditions, such as during startup or idling, fluid couplings can offer energy-saving benefits. They allow the engine to run at a constant speed while smoothly transmitting power to the load.
  • Wide Range of Applications: Fluid couplings are versatile and can be used in various industrial machinery, including conveyors, crushers, pumps, fans, marine propulsion systems, and more.

Despite these advantages, fluid couplings also have limitations, such as a slight power loss due to slip and limited torque multiplication compared to torque converters. Therefore, the choice between a fluid coupling and other power transmission devices depends on the specific requirements of the application.

China Hot selling CZPT Customized Fluid Coupling for Conveyor, Hydraulic Gear Fluid Coupling  China Hot selling CZPT Customized Fluid Coupling for Conveyor, Hydraulic Gear Fluid Coupling
editor by CX 2023-10-11

China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling

Product Description

Flexible flex Fluid Chain Jaw flange Gear Rigid Spacer PIN HRC MH NM universal Fenaflex Oldham spline clamp tyre grid hydraulic servo motor shaft Coupling
 

Product Description

The function of Shaft coupling:
1. Shafts for connecting separately manufactured units such as motors and generators.
2. If any axis is misaligned.
3. Provides mechanical flexibility.
4. Absorb the transmission of impact load.
5. Prevent overload

We can provide the following couplings.
 

Rigid coupling Flange coupling Oldham coupling
Sleeve or muff coupling Gear coupling Bellow coupling
Split muff coupling Flexible coupling Fluid coupling
Clamp or split-muff or compression coupling Universal coupling Variable speed coupling
Bushed pin-type coupling Diaphragm coupling Constant speed coupling

Company Profile

We are an industrial company specializing in the production of couplings. It has 3 branches: steel casting, forging, and heat treatment. Main products: cross shaft universal coupling, drum gear coupling, non-metallic elastic element coupling, rigid coupling, etc.
The company mainly produces the industry standard JB3241-91 swap JB5513-91 swc. JB3242-93 swz series universal coupling with spider type. It can also design and produce various non-standard universal couplings, other couplings, and mechanical products for users according to special requirements. Currently, the products are mainly sold to major steel companies at home and abroad, the metallurgical steel rolling industry, and leading engine manufacturers, with an annual production capacity of more than 7000 sets.
The company’s quality policy is “quality for survival, variety for development.” In August 2000, the national quality system certification authority audited that its quality assurance system met the requirements of GB/T19002-1994 IDT ISO9002:1994 and obtained the quality system certification certificate with the registration number 0900B5711. It is the first enterprise in the coupling production industry in HangZhou City that passed the ISO9002 quality and constitution certification.
The company pursues the business purpose of “reliable quality, the supremacy of reputation, commitment to business and customer satisfaction” and welcomes customers at home and abroad to choose our products.
At the same time, the company has established long-term cooperative relations with many enterprises and warmly welcomes friends from all walks of life to visit, investigate and negotiate business!

 

How to use the coupling safely

The coupling is an intermediate connecting part of each motion mechanism, which directly impacts the regular operation of each motion mechanism. Therefore, attention must be paid to:
1. The coupling is not allowed to have more than the specified axis deflection and radial displacement so as not to affect its transmission performance.
2. The bolts of the LINS coupling shall not be loose or damaged.
3. Gear coupling and cross slide coupling shall be lubricated regularly, and lubricating grease shall be added every 2-3 months to avoid severe wear of gear teeth and serious consequences.
4. The tooth width contact length of gear coupling shall not be less than 70%; Its axial displacement shall not be more significant than 5mm
5. The coupling is not allowed to have cracks. If there are cracks, it needs to be replaced (they can be knocked with a small hammer and judged according to the sound).
6. The keys of LINS coupling shall be closely matched and shall not be loosened.
7. The tooth thickness of the gear coupling is worn. When the lifting mechanism exceeds 15% of the original tooth thickness, the operating mechanism exceeds 25%, and the broken tooth is also scrapped.
8. If the elastic ring of the pin coupling and the sealing ring of the gear coupling is damaged or aged, they should be replaced in time.

 

Certifications

 

Packaging & Shipping

fluid coupling

Impact of Fluid Coupling on the Overall Reliability of a Power Transmission System

A fluid coupling can significantly contribute to the overall reliability of a power transmission system in various ways:

  • Smooth Power Transmission: Fluid couplings facilitate smooth power transmission between the driving and driven components, minimizing shocks and vibrations during startup and operation. This reduces the risk of sudden failures or damages to connected equipment.
  • Overload Protection: Fluid couplings offer inherent overload protection by allowing controlled slip during sudden load changes or overloads. This protects the system from excessive stresses and prevents damage to the motor and driven machinery.
  • Reduced Mechanical Wear: The smooth operation of fluid couplings reduces mechanical wear on connected components, such as gearboxes, belts, and chains. This results in longer service life and decreased maintenance requirements.
  • Increased Equipment Life: By reducing stress and wear on the entire power transmission system, fluid couplings can extend the service life of motors, gearboxes, and other components. This enhances the overall reliability of the system over an extended period.
  • Enhanced System Safety: The ability of fluid couplings to protect against shock loads and overloads enhances the safety of personnel working with or near the machinery. It prevents sudden and unpredictable movements, reducing the risk of accidents and injuries.
  • Stable Performance: Fluid couplings maintain a constant speed ratio between the driving and driven shafts, ensuring stable and predictable performance of the power transmission system. This predictability aids in maintaining process stability and efficiency.

Incorporating a properly sized and selected fluid coupling into a power transmission system can improve its reliability, reduce downtime, and prevent costly breakdowns. Regular maintenance and monitoring of the fluid coupling also play a crucial role in ensuring long-term reliability and trouble-free operation.

fluid coupling

Real-World Case Studies: Improved Performance with Fluid Couplings

Fluid couplings have been widely adopted in various industries, and numerous real-world case studies demonstrate their positive impact on performance and efficiency. Here are a few examples:

Case Study 1: Mining Conveyor System

In a large mining operation, a conveyor system used to transport heavy loads of ore experienced frequent starts and stops due to fluctuating material supply. The abrupt starting and stopping led to significant wear and tear on the conveyor components, causing frequent breakdowns and maintenance downtime.

After installing fluid couplings at critical points in the conveyor system, the soft start and stop capability of the fluid couplings significantly reduced the mechanical stress during operation. This led to a smoother material flow, reduced conveyor wear, and extended equipment life. Additionally, the fluid couplings’ overload protection feature prevented damage to the conveyor during peak loads, ensuring uninterrupted production.

Case Study 2: Marine Propulsion System

In a marine vessel equipped with traditional direct drive systems, the crew faced challenges in maneuvering the ship efficiently. The fixed propeller arrangement made it challenging to control the vessel’s speed and direction accurately, leading to increased fuel consumption and decreased maneuverability.

By retrofitting the vessel’s propulsion system with fluid couplings, the ship’s performance improved significantly. The fluid couplings allowed for flexible and smooth speed control, enabling precise maneuvering and reduced fuel consumption. The ability to adjust the load on the propeller enhanced the vessel’s overall efficiency, resulting in reduced operating costs and improved environmental sustainability.

Case Study 3: Industrial Pumping Station

In an industrial pumping station, the constant starting and stopping of the pumps caused water hammer and pressure surges within the pipeline network. The sudden hydraulic shocks led to pipe bursts, valve failures, and increased energy consumption.

After implementing fluid couplings in the pump drive systems, the pumps could be softly started and stopped. The fluid couplings’ torque control capabilities ensured a gradual increase in pump speed, eliminating water hammer and pressure surges. As a result, the pumping station’s reliability improved, maintenance costs decreased, and the energy consumption reduced due to smoother pump operations.

These case studies demonstrate the positive effects of using fluid couplings in various applications. They highlight how fluid couplings contribute to improved performance, reduced mechanical stress, enhanced control, and cost savings in industrial machinery and systems.

“`fluid coupling

Applications of Fluid Couplings in Industrial Machinery

Fluid couplings are widely used in various industrial machinery and equipment due to their unique characteristics and benefits. Some common applications include:

  • Conveyors: Fluid couplings are used in conveyor systems to provide smooth start-ups and overload protection. They help in preventing damage to the conveyor belts and equipment during sudden starts and stops.
  • Pumps: Fluid couplings are employed in pumps to control the acceleration and deceleration of the pump impeller. This ensures a gradual and controlled flow of fluids, reducing water hammer and pressure surges.
  • Fans: Industrial fans often use fluid couplings to regulate fan speed and avoid abrupt changes in airflow, which can cause mechanical stress and system instability.
  • Mining Equipment: Fluid couplings are used in mining machinery, such as crushers and conveyors, to protect the drivetrain from shock loads and to enhance equipment reliability.
  • Marine Propulsion Systems: In marine applications, fluid couplings are used in propulsion systems to provide smooth engagement of the propeller, protecting the engine and transmission.
  • Power Plants: Fluid couplings are utilized in power plants for boiler feed pumps, induced draft fans, and other equipment to achieve smooth operation and prevent sudden stress on mechanical components.
  • Steel Industry: In steel mills, fluid couplings are employed in various equipment, including rolling mills and continuous casting machines, to protect the machinery and enhance productivity.
  • Automotive: Fluid couplings are used in automatic transmissions to smoothly transmit power from the engine to the wheels, allowing smooth gear changes and preventing driveline shock.
  • Wood Processing: In wood processing equipment, such as chippers and saws, fluid couplings are used to protect the equipment from shock loads and to achieve efficient power transmission.

Overall, fluid couplings play a crucial role in a wide range of industrial machinery applications, providing enhanced protection, smoother operation, and increased equipment longevity.

China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling  China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling
editor by CX 2023-09-01

China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling

Product Description

Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling
 

Features

Material: cast iron GG25, GG20  steel: C45
Parts: 2 couplings and 1 tire body.
Size from F40-F250. and Type: “B”, “F”, “H”.
Working temp: -20~80ºC
Transmission torque:10-20000N.M
Axial misalignment: D*2%
Radial deviation: D*1%
Angular misalignment:3°-6°
Application: tire couplings are usually used in wet, dusty, under attract, vibration, rotating, and complex working conditions. like:  diesel pump
Installation: easy on, easy off.
Maintenance: no need for lubricating and durability.
 

Product Description

Size Type Bush No. MaxBore Type F&H Type H Serve over
Key
A C D F M
mm Inch L E L E
F40 B 32 33 22 M5 104 82 11
F40 F 1008 25 1″ 33 22 104 82 11
F40 H 1008 25 1″ 33 22 104 82 11
F50 B 38 43 32 M5 133 100 79 12.5
F50 F 1210 32 1 1/4″ 38 25 133 100 79 12.5
F50 H 1210 32 1 1/4″ 38 25 133 100 79 12.5
F80 B 45 55 33 M6 165 125 70 16.5
F80 F 1610 42 1 5/8″ 42 25 165 125 103 16.5
F60 H 1610 42 1 5/8″ 42 25 165 125 103 16.6
F70 B 50 47 35 M8 187 142 80 60 11.5
F70 F 2012 50 2″ 44 32 187 142 80 50 11.5
F70 H 1810 42 1 5/8″ 42 25 187 142 80 50 11.5
F80 B 60 55 42 M8 211 165 98 54 12.5
F80 F 2517 80 2 1/2″ 58 45 211 165 98 54 12.5
F80 H 2012 50 2″ 45 32 211 165 98 54 12.5
F90 H 70 63.5 49 M10 235 188 108 62 13.5
F90 F 2517 60 2 1/2″ 58.5 45 235 188 108 62 13.5
F90 H 2517 60 2 1/2″ 58.5 45 235 188 108 62 13.5
F100 H 80 63.5 49 M10 235 188 120 62 13.5
F100 F 3571 75 3″ 64.5 51 235 188 125 62 13.5
F100 H 2517 60 2 1/2″ 58.5 45 235 188 113 62 13.5
F110 B 90 75.5 63 M12 279 233 128 62 12.5
F110 F 3571 75 3″ 63.5 51 279 233 134 62 12.5
F110 H 3571 75 3″ 63.5 51 279 233 134 62 12.5
F120 B 100 84.5 70 M12 314 264 140 67 14.5
F120 F 3525 100 4″ 79.5 65 314 264 144 67 14.5
F120 H 3571 75 4″ 85.5 51 314 264 144 67 14.5
F140 B 130 110.5 4 M16 359 311 178 73 16
F140 F 3525 100 4″ 81.5 65 359 311 178 73 16
F140 H 3525 100 4″ 81.5 65 359 311 178 73 18
F160 B 140 117 102 M20 402 345 187 78 16
F160 F 4030 115 4 1/2″ 92 77 402 345 197 78 16
F160 H 4030 115 4 1/2″ 92 77 402 345 197 78 16
F180 B 150 137 114 M16 470 394 205 94 23
F180 F 4536 125 5″ 112 89 470 394 205 94 23
F180 H 4535 125 5″ 112 89 470 394 205 94 23
F200 B 150 138 114 M20 508 429 205 103 24
F200 F 4535 125 5″ 113 89 508 429 205 103 24
F200 H 4535 125 5″ 113 89   508 429 205 103 24
F220 B 160 154.5 127 M20 562 474 223 118 27.5
F220 F 5571 125 5″ 129.5 102 562 474 223 118 27.5
F220 H 5571 125 5″ 129.5 102 562 474 223 118 27.5
F250 H 190   161.5 132 M20 628 522 254 125 29.5

 

Related Products

 

 

Company Profile

 

FAQ

Q: How to ship to us?
A: It is available by air, sea, or train.

Q: How to pay the money?
A: T/T and L/C are preferred, with different currencies, including USD, EUR, RMB, etc.

Q: How can I know if the product is suitable for me?
A: >1ST confirm drawing and specification >2nd test sample >3rd start mass production.

Q: Can I come to your company to visit?
A: Yes, you are welcome to visit us at any time.
 

fluid coupling

Key Parameters in Designing a Fluid Coupling System

Designing a fluid coupling system requires careful consideration of various parameters to ensure optimal performance and efficiency. Here are the key parameters to take into account:

  • Power Rating: Determine the power requirements of the connected equipment to select a fluid coupling with an appropriate power rating. Undersized couplings may lead to overheating and premature wear, while oversized couplings can result in energy losses.
  • Input and Output Speeds: Consider the rotational speeds of the input and output shafts to ensure the fluid coupling can accommodate the desired speed range without slipping or exceeding its limitations.
  • Torque Capacity: Calculate the maximum torque expected in the system and choose a fluid coupling with a torque capacity that exceeds this value to handle occasional overloads and prevent damage.
  • Fluid Viscosity: The viscosity of the fluid inside the coupling affects its torque transmission capabilities. Select a fluid viscosity suitable for the application and operating conditions.
  • Start-Up and Load Conditions: Analyze the start-up torque and load variations during operation. The fluid coupling should be capable of handling these conditions without excessive slip or stress on the drivetrain.
  • Environmental Factors: Consider the ambient temperature, humidity, and potential exposure to contaminants. Ensure the fluid coupling’s materials and sealing mechanisms can withstand the environmental conditions.
  • Size and Weight: Optimize the size and weight of the fluid coupling to minimize space requirements and facilitate installation and maintenance.
  • Torsional Resonance: Evaluate torsional resonances in the system and select a fluid coupling with appropriate damping characteristics to mitigate vibrations.
  • Overload Protection: Determine if overload protection features, such as slip or torque limiting, are necessary to safeguard the connected equipment from damage.
  • Compatibility: Ensure the fluid coupling is compatible with the specific application, including the type of driven equipment, its mechanical characteristics, and any other interrelated components in the drivetrain.
  • Operational Costs: Consider the long-term operational costs, maintenance requirements, and efficiency of the fluid coupling to optimize the overall lifecycle cost of the system.
  • Safety Standards: Adhere to relevant safety standards and regulations in the design and installation of the fluid coupling system to ensure safe and reliable operation.

By carefully evaluating these parameters and selecting a fluid coupling that aligns with the specific requirements of the application, engineers can design a reliable and efficient fluid coupling system for various industrial and power transmission applications.

fluid coupling

Contribution of Fluid Coupling to the Overall Efficiency of a Mechanical System

A fluid coupling plays a crucial role in improving the overall efficiency of a mechanical system, especially in applications where smooth power transmission, soft-starting, and torque control are essential. Here’s how a fluid coupling contributes to system efficiency:

1. Smooth Power Transmission:

Fluid couplings provide a smooth and gradual transfer of power from the driving to the driven machinery. The absence of direct mechanical contact between the input and output shafts reduces shock loads and vibrations, leading to less wear and tear on the connected equipment. This smooth power transmission results in increased system efficiency and reduced downtime.

2. Soft-Start Capability:

Fluid couplings offer soft-starting functionality, which is particularly beneficial for high-inertia or heavy-load applications. During startup, the fluid coupling allows the input shaft to gradually accelerate the output shaft, preventing sudden jerks or torque spikes. Soft-starting not only protects the mechanical components but also reduces energy consumption during the starting phase, contributing to overall efficiency.

3. Torque Control:

Fluid couplings enable precise control over the torque transmitted between the driving and driven machinery. By adjusting the fill level or using variable speed couplings, the torque output can be fine-tuned to match the requirements of the application. This feature ensures optimal performance and energy efficiency, especially in systems where torque demand varies during operation.

4. Overload Protection:

In case of sudden overloads or jamming of the driven machinery, the fluid coupling acts as a torque limiter. It will slip and absorb excess torque, protecting the mechanical system from damage. This overload protection not only safeguards the equipment but also contributes to the longevity and efficiency of the entire system.

5. Heat Dissipation:

Fluid couplings can absorb and dissipate heat generated during continuous operations. This heat dissipation capability prevents the system from overheating, ensuring consistent performance and avoiding thermal damage to the machinery. By maintaining proper operating temperatures, the fluid coupling aids in improving overall efficiency.

6. Energy Savings:

With its ability to reduce shock loads and provide smooth acceleration, a fluid coupling can help save energy during starting and stopping cycles. The elimination of mechanical shocks and vibrations reduces energy losses, resulting in higher overall energy efficiency.

In summary, a fluid coupling enhances the overall efficiency of a mechanical system by providing smooth power transmission, soft-start capability, precise torque control, overload protection, heat dissipation, and energy savings. Its contributions to reduced wear and tear, energy-efficient operations, and enhanced equipment lifespan make it a valuable component in various industrial applications.

fluid coupling

Comparison: Fluid Coupling vs. Torque Converter

Fluid couplings and torque converters are both hydrodynamic devices used in automotive and industrial applications to transmit power between an engine and a driven load. While they share some similarities, they also have distinct differences:

  • Function: The primary function of both fluid couplings and torque converters is to transmit rotational power from the engine to the transmission or driven load. They allow for smooth power transmission and provide a degree of isolation between the engine and the load.
  • Construction: Both devices consist of an impeller, a turbine, and a housing filled with hydraulic fluid (usually oil). The impeller is connected to the engine’s crankshaft, the turbine to the transmission/input shaft, and the housing is shared between the two.
  • Torque Transmission: In a fluid coupling, the power is transmitted purely through hydrodynamic principles. The impeller accelerates the fluid, which then drives the turbine. However, there is no torque multiplication, and the output speed is always slightly less than the input speed. On the other hand, a torque converter can provide torque multiplication due to its stator, which redirects the fluid flow and increases the torque transmitted to the turbine.
  • Lock-up Clutch: Some torque converters have a lock-up clutch that can mechanically connect the impeller and the turbine at higher speeds. This effectively eliminates the slip between the two elements and increases overall efficiency, similar to the operation of a fluid coupling at higher speeds.
  • Automotive Use: Torque converters are commonly used in automatic transmissions in vehicles, while fluid couplings were more prevalent in older manual transmissions. However, modern manual transmissions generally use clutch systems instead of fluid couplings.
  • Efficiency: Fluid couplings are generally more efficient than torque converters, especially at higher speeds. Torque converters can experience efficiency losses due to fluid slippage and the operation of the stator.
  • Applications: Fluid couplings find applications in various industrial machinery, such as conveyors, pumps, and crushers, where the priority is smooth power transmission and overload protection. Torque converters are primarily used in vehicles, offering the benefit of automatic gear shifting and torque multiplication during acceleration.

Overall, both fluid couplings and torque converters play essential roles in power transmission, but their specific design and application characteristics determine their suitability for different use cases.

China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling  China Professional Flexible Flex Fluid Chain Jaw Flange Gear Rigid Spacer Pin HRC Mh Nm Universal Fenaflex Oldham Spline Clamp Tyre Grid Hydraulic Servo Motor Shaft Coupling
editor by CX 2023-08-02

China manufacturer Made in China Customized Cast Iron Rigid Hydraulic Fitting Pipe Fittings Grooved Coupling coupling capacitance

Product Description

1
Name: Made in china customized cast iron rigid hydraulic fitting pipe fittings grooved coupling
Min order: 1000 pcs
Packing: export standard packing
Customized production is available as your drawings or sample.
 

Process Sand Casting, Investment Casting
Material Malleable Iron , Ductile Iron  
Weight 0.1Kg~200Kg
Testing instrument  composition testing Spectrometer, Metallographic microscope
Performance testing Hardness tester, Tensile testing machine
Size Measuring  Vernier Caliper, Depth Caliper, feeler gauge,Thread Gauge , Height Gauge
Roughness Ra1.6~Ra6.3
Machining Equipment CNC Center , CNC Machines, Turning, Drilling, Milling, Boring machine,Grinding Machines,
Wire EDM,Laser Cutting&Welding, Plasma Cutting &Welding, EDM etc.
Quality control Sampling inspection of raw materials and semi-finished products, 100% Inspection of finished products  
Surface Treatment Sand Blast , Painting,  Coating, Galvanized ,  Hot Galvanized
Production Capacity 60000T / Years
Lead Time Normally 30 – 45 Days.
Payment Terms T/T , L/C 
Material Standard ASTM , AISI , DIN , BS, JIS, GB,
Certification ISO9001:2008, IATF16949:2016

2
About  quality
We insist that the survival of the company should depend on the products quality continuous improvement, without which we cannot survive for long.
Our product quality control system
Quality control involves the inspection and control of incoming materials, production process and finished products.
1 Firstly, metallurgical microscope analysis is performed on randomly sampled incoming materials to ensure that the chemical composition meets the production requirements.
2 Then, during the production process, there are QC personnel to conduct timely spot checks to ensure that the product is free of defects during the manufacturing process and to coordinate and handling of any abnormal quality issues that may arise.
3 The final step in the production process is a magnetic particle detector for metal parts to detect hidden cracks or other defects.
4 All the finished metal parts is sampled in proportion and sent to the laboratory for various mechanical property tests and dimensional measurements, and the surface quality is manually 100% inspected.
5 About the quality management system, we strictly carry out system management in accordance with ISO9001 and TS16949 quality standards and 5S lean production management is implemented on the production site.

3
Our Advantages:
1 We have a complete production process and equipment research and development capabilities for ferrous metal forming. Over 25 years of production experience of forging equipment and casting equipment make us own deep level understanding and operating of all equipments’ performance and running.
2 Our parent company, HiHangZhou Group, is a world-renowned high-end machinery manufacturing enterprise with more than 30 domestic subsidiaries and branches.  The sales volume of 4 products ranks No1 nationwide and even worldwide, providing us with a strong technical and financial support.
3 One-third of over 300 staff are technical R&D members, ensuring the continuous technical innovation and the sustainable development of our company.
4 Our company implements the employee stock ownership system of company shares Increasing members’ sense of responsibility, creativity and work motivation.
5 The company  is a model enterprise in the region of low-carbon environmental protection, and energy saving and emission reduction in reduction.
6 Unique company culture, and the regular rotation of individual work position give full play to the potential of talents and provide strong vitality for the development of the company.
7 Our Service:
A. Customized and Standard Manufacturing Service
B. A variety of Manufacturing Process Integration
C. Quality and Delivery Time Guaranteed
D. Effective Communication Ability

5
Company Culture 

Our Vision
To become 1 of the leading companies

Our Mission
To become a platform for employees to realize their dream
To become 1 of the transforming and upgrading pacemaker of Chinese enterprises
To set the national brands with pride

Our Belief
Strive to build the company into an ideal platform for entrepreneurs to realize their self-worth and contribute to the society

Values
Improvement is innovation, everyone can innovate
innovation inspired and failures tolerated

6
FAQ
1.
Q:  Are you a trading company or a manufacturer?
A:  Obviously we are a manufacturer of forging products, casting products and also have a high level of machining capabilities.

2.
Q:  What series products do your have?
A:  We are mainly engaged in forming processing of ferrous metals, including processing by casting , forging and machining. As you know, such machinery parts can be observed in various industries of equipment manufacturing.

3
Q:  Do you provide samples? is it free?
A:  Yes, we commonly provide samples according to the traditional practice, but we also need customers to provide a freight pay-by-account number to show mutual CZPT of cooperation.

4
Q:  What is your minimum order quantity?
A:  Yes, we require all international orders to have an minimum order quantity. The quantity is up to the exact products feature or property such as the material, weight, construction etc.

5
Q:  What is the lead time?
A:  Generally our forging products and casting products need to make new dies or molds, the time of making new dies or molds and samples within 30-45 days, and the large batch production time within 30-45 days. it’s also according to the parts structural complexity and quantity.

6
Q: What kinds of payment methods do you accept?
A: You can make the payment by T/T or L/C. 30% deposit in advance, 70% balance against the copy of B/L.

 
 

After-sales Service: 1 Years
Warranty: 1 Years
Connection: Press Connection
Structure: Universal
Flexible or Rigid: Rigid
Material: Iron
Samples:
US$ 20/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

gearbox

Programming With Couplings

A coupling is a mechanical device that connects two shafts together and transmits power. Its purpose is to join rotating equipment and allows some degree of end-movement or misalignment. There are many different types of couplings. It’s important to choose the right one for your application.

Mechanical connection between two shafts

There are many ways to achieve mechanical connection between two shafts, including the use of a coupling. One common type is the beam coupling, which is also known as a helical coupling. It is used for transmission of torque between two shafts. This type of connection accommodates axial, parallel and angular misalignments.
The hubs and shafts of a worm gear are connected together by a coupling. This mechanical connection allows one shaft to turn another without causing a mechanical failure. This type of coupling is made from sliding or rubbing parts to transfer torque. However, the coupling is not designed to withstand jerks, so it isn’t suitable for high-speed applications.
The use of a coupling is common in machinery and equipment. It helps transmit power from one drive shaft to the other, while adding mechanical flexibility. It is also useful for reducing the impact and vibration caused by misalignment. It also protects the drive shaft components from wear and tear.
A double-hook coupling can be used to provide a uniform angular velocity at the driven shaft. Another example is a double-jointed coupling. A double-jointed coupling can be used to connect shafts that are not directly intersecting. The double-jointed yoke can be used for the same purpose.
A shaft coupling is a device that maintains a strong mechanical connection between two shafts. It transfers motion from one shaft to another, at all loads and misalignments. Unlike a conventional linkage, a shaft coupling isn’t designed to allow relative motion between the two shafts. Couplings often serve several purposes in a machine, but their primary use is torque and power transmission.

Functions that control the flow of another function

One of the simplest programming constructs is a function that controls the flow of another function. A function can take an argument and return a different value, but it must be ready to return before it can pass that value to another function. To do this, you can use the goto statement and the if statement. Another way to control flow is to use a conditional statement.
gearbox

Criteria for selecting a coupling

There are several important factors to consider when choosing the right coupling. One of the most important factors is coupling stiffness, which depends on the material used and the shape. The stiffness of a coupling determines its ability to resist elastic deformation. A stiff coupling is desirable for certain types of applications, but it’s undesirable for others. Stiffness can reduce the performance of a system if there’s too much inertia. To avoid this, ensure that the coupling you choose is within the recommended limits.
The size of a coupling is also important. Different coupling types can accommodate different shaft sizes and shapes. Some couplings have special features, such as braking and shear pin protection. When choosing a coupling, you should also consider the type of driven equipment. If you need to connect a high-torque motor, for example, you’ll want to choose a gear coupling. Likewise, a high-speed machine may require a disc coupling.
Another factor to consider when selecting a coupling is the torque rating. Despite its importance, it’s often underestimated. The torque rating is defined as the torque of the coupling divided by its OD. In some cases, torque may fluctuate during a cycle, requiring a coupling with a higher torque rating.
Torsionally flexible couplings are also important to consider. Their design should be able to withstand the torque required during operation, as well as the required speed. The coupling should also have a high degree of torsional stiffness, as well as damping. Furthermore, a damping coupling can reduce the energy wasted through vibration.
The sizing of a coupling is also determined by the torque. Many engineers use torque to select the correct coupling size, but they also take into consideration torsional flexibility and torsional stiffness. For example, a shaft may be able to handle large torque without damaging the coupling, while a disk may be unable to handle large amounts of torque.
Besides torque, another important consideration in coupling selection is the cost. While a coupling may be cheaper, it may be less reliable or easier to maintain. Couplings that are difficult to service may not last as long. They may also require frequent maintenance. If that’s the case, consider purchasing a coupling with a low service factor.
There are many different types of couplings. Some require additional lubrication throughout their lifetime, while others are 100% lubrication-free. An example of a 100% lubrication-free coupling is the RBI flexible coupling from CZPT. This type of coupling can significantly reduce your total cost of ownership.
In addition to the above-mentioned benefits, elastomeric couplings are low-cost and need little maintenance. While they are often cheaper than metallic couplings, they also have excellent shock absorption and vibration dampening properties. However, they are susceptible to high temperatures. Also, they are difficult to balance as an assembly, and have limited overload torque capacity.
China manufacturer Made in China Customized Cast Iron Rigid Hydraulic Fitting Pipe Fittings Grooved Coupling   coupling capacitanceChina manufacturer Made in China Customized Cast Iron Rigid Hydraulic Fitting Pipe Fittings Grooved Coupling   coupling capacitance
editor by CX 2023-04-20

China factory 3/8 PT flat face hydraulic steel quick coupling coupling electrical

Product Description

 

Product Description

Applications:

The ZM -ISOASeries bring to the industry a proven design foruse on construction equipment, forestry equipment, agricultural machinery, oil tools, oil equipment steel mill machinery, and other demanding hydraulic applications.
Socket:

IS0 PART N0 LS D HEX1 A T
6.3 ZM-1S0A-02SF 50 φ26 19 13 G1/4 NPT1/4
10 ZM-IS0A-03SF 57.1 φ31.5 22 16 G3/8 NPT3/8
12.5 ZM-IS0A-04SF 66 φ38.5 27 18 G1/2 NPT1/2
20 ZM-IS0A-06SF 82.5 φ48 34 20.5 G3/4 NPT3/4
25 ZM-1S0A-08SF 100 φ56 41 20.5 G1 NPT1

Plug:

IS0 PART N0 LP d C HEX2 A T
6.3 ZM-1S0A-02PF 38.5 11.8 15 19 13 G1/4 NPT1/4
10 ZM-IS0A-03PF 39 17.3 19 22 16 G3/8 NPT3/8
12.5 ZM-1S0A-04PF 44 20.5 29 27 18 G1/2 NPT1/2
20 2M-1S0A-06PF 55 29 29 34 20.5 G3/4 NPT3/4
25 ZM-1S0A-08PF 66 34.3 35 41 20.5 G1 NPT1

Coupling Fitting:

IS0 PART N0 L D HEX1 HEX2 T
6.3 ZM-IS0A-02 74.2 φ26 19 19 G1/4 NPT1/4
10 ZM-IS0A-03 78.5 φ31.5 22 22 G3/8 NPT3/8
12.5 ZM-IS0A-04 88.2 φ38.5 27 27 G1/2 NPT1/2
20 ZM-IS0A-06 110.4 φ48 34 34 G3/4 NPT3/4
25 ZM-I S0A-08 132.9 φ56 41 41 G1 NPT1

Detailed Photos

 

Features:

New valve design, it can resistance damage from high flow and the pressure of impulse that providing advanced performance.

·Poppet valves available to prevent uncoupled leakage.
·Poppet valves open automatically when coupled, within rated working pressure, to keep the flow expeditely.
·Critical parts are hardened for durability.
·Dependable ball-locking mechanism holds the mating halves together.
·Socket and plug are precision machined from CZPT bar stock.
·New Chrome plating treatment provides advanced anti-rust performance
·ZM-ISOAseries conforms to the standard of ISO7241-A.
·Compatible with PARKER6600 Series,FASTERANV Series,AEROQUIP5600 Series and CZPT HA 15000 Series

After-sales Service: Quality Service
Warranty: Three Months
Type: Coupling
Application: Machine
Certification: ISO9001: 2000
Condition: New
Samples:
US$ 3.69/Piece
1 Piece(Min.Order)

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Customization:
Available

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What Is a Coupling?

A coupling is a mechanical device that links two shafts together and transmits power. Its purpose is to join rotating equipment while permitting a small amount of misalignment or end movement. Couplings come in a variety of different types and are used in a variety of applications. They can be used in hydraulics, pneumatics, and many other industries.

Types

Coupling is a term used to describe a relationship between different modules. When a module depends on another, it can have different types of coupling. Common coupling occurs when modules share certain overall constraints. When this type of coupling occurs, any changes to the common constraint will also affect the other modules. Common coupling has its advantages and disadvantages. It is difficult to maintain and provides less control over the modules than other types of coupling.
There are many types of coupling, including meshing tooth couplings, pin and bush couplings, and spline couplings. It is important to choose the right coupling type for your specific application to get maximum uptime and long-term reliability. Listed below are the differences between these coupling types.
Rigid couplings have no flexibility, and require good alignment of the shafts and support bearings. They are often used in applications where high torque is required, such as in push-pull machines. These couplings are also useful in applications where the shafts are firmly attached to one another.
Another type of coupling is the split muff coupling. This type is made of cast iron and has two threaded holes. The coupling halves are attached with bolts or studs.
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Applications

The coupling function is an incredibly versatile mathematical tool that can be used in many different scientific domains. These applications range from physics and mathematics to biology, chemistry, cardio-respiratory physiology, climate science, and electrical engineering. The coupling function can also help to predict the transition from one state to another, as well as describing the functional contributions of subsystems in the system. In some cases, it can even be used to reveal the mechanisms that underlie the functionality of interactions.
The coupling selection process begins with considering the intended use of the coupling. The application parameters must be determined, as well as the operating conditions. For example, if the coupling is required to be used for power transmission, the design engineer should consider how easily the coupling can be installed and serviced. This step is vital because improper installation can result in a more severe misalignment than is specified. Additionally, the coupling must be inspected regularly to ensure that the design parameters remain consistent and that no detrimental factors develop.
Choosing the right coupling for your application is an important process, but it need not be difficult. To find the right coupling, you must consider the type of machine and environment, as well as the torque, rpm, and inertia of the system. By answering these questions, you will be able to select the best coupling for your specific application.
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Problems

A coupling is a device that connects two rotating shafts to transfer torque and rotary motion. To achieve optimal performance, a coupling must be designed for the application requirements it serves. These requirements include service, environmental, and use parameters. Otherwise, it can prematurely fail, causing inconvenience and financial loss.
In order to prevent premature failure, couplings should be properly installed and maintained. A good practice is to refer to the specifications provided by the manufacturer. Moreover, it is important to perform periodic tests to evaluate the effectiveness of the coupling. The testing of couplings should be performed by qualified personnel.
China factory 3/8 PT flat face hydraulic steel quick coupling   coupling electricalChina factory 3/8 PT flat face hydraulic steel quick coupling   coupling electrical
editor by CX 2023-04-17

China Open and Close Type Hydraulic Quick Coupler Type Female Quick Coupling with Great quality

Item Description

ISO 7241 A Open And Close Variety Hydraulic Quick Coupler Sort Female quick coupling

 

Size Operating strain Movement Charge Burst Pressures
mm inch Mpa( CZPT ) I/min ( GPM ) MPa( CZPT ) MPa( CZPT ) MPa(PSI )
six.3 1/4″ 35(5000) 9(2.4) 160(2.4) 120(18000) 140(21000)
10 3/8″ 30(4500) 30(7.9) a hundred and sixty(7.9) 120(18000) 140(21000)
12.5 one/2″ 30(4500) seventy five(19.8) 130(19.8) 120(18000) 130(19500)
20 three/4″ 30(4500) a hundred and eighty(47.6) 120(forty seven.6) 120(18000) 120(18000)
twenty five one” 25(3625) 270(seventy one.4) a hundred(seventy one.4) 100(14500) 100(14500)
31.5 1 1/4″ 26(3625) 330(87.3) 100(87.3) 100(14500) 100(14500)
forty one 1/2″ 20(3000) 450(119) 80(119) 80(12000) 80(12000)
50 2″ 15(2250) 900(238) 60(9000) 60(9000) 60(9000)

 Part NO. Thread E F Part NO. Thread E F G
    (mm.) (mm.) (mm.)     (in.) (in.) (in.)
KZEB-02SF G1/4 forty seven. 22. 27. KZEB-N02SF NPT1/4 one. .eighty five .88 1.08
KZEB-03SF G3/8 fifty five. 27. 32. KZEB-N03SF NPT3/8 2.18 1.06 one.27
KZEB-04SF G1/2 70. 32. 39. KZEB-N04SF NPT1/two 2.75 1.twenty five 1.52
KZEB-22SF M22X1.5 70. 32. 39. KZEB-U34SF UNF3/4 two.75 1.25 one.fifty two
KZEB-06SF G3/four eighty five. 41. forty eight. KZEB-N06SF NPT3/four 3.36 one.sixty two 1.ninety
KZEB-08SF G1 104. forty eight. fifty four. KZEB-N08SF NPT1 4.eleven 1.88 two.fourteen
KZEB-10SF G1 1/four one hundred ten. fifty four. 69. KZEB-N10SF NPT1 1/4 4.33 two.twelve two.seventy one
KZEB-12SF G1 1/2 128. 60. 82. KZEB-N12SF NPT11/two 5.03 two.36 3.22
KZEB-16SF G2 153. 77. a hundred. KZEB-N16SF NPT 2 6.02 3.03 3.ninety three

Element NO. Thread E F G Element NO. Thread E F G
    (mm.) (mm.) (mm.)     (in.) (in.) (in.)
KZEB-02PF G1/four 32. 19. 22. KZEB-N02PF NPT1/four 1.27 .seventy five .87
KZEB-03PF G3/eight 37. 22. 26. KZEB-N03PF NPT3/8 1.forty seven .88 one.01
KZEB-04PF G1/two 46. 27. 31. KZEB-N04PF NPT1/2 1.82 one.06 1.23
KZEB-22PF M22X1.5 forty six. 27. 31. KZEB-U34PF UNF3/4 1.eighty two 1.06 one.23
KZEB-06PF G3/4 fifty eight. 35. forty. KZEB-N06PF NPT3/four two.29 1.38 one.fifty nine
KZEB-08PF G1 sixty six. 41. forty eight. KZEB-N08PF NPT1 2.fifty eight one.sixty two 1.88
KZEB-10PF G1 1/4 seventy five. 54. fifty nine. KZEB-N10PF NPT1 1/4 2.95 two.twelve two.32
KZEB-12PF G11/two 86. sixty. sixty eight. KZEB-N12PF NPT11/2 3.38 two.36 two.sixty seven
KZEB-16PF G2 100. 77. 84. KZEB-N16PF NPT2 three.93 three.03 three.thirty

Pre-sale support:

*We give presales in our very first cooperation, make clear your situation and give you some tips, you can making expense spending budget, production, planing, so that clients can make a reasonable strategy with less cost.
Stage 1st: Let us be sincere with every single other and make distinct the scenario of each consumer initial, then we can give very best advice, since we’re more than 20 several years knowledge in hydraulic elements.
Stage 2st: I will give the details to every single consumer for reference, which includes the dimension, efficiency, good quality and cost amount. 
Phase 3st: We can compare the products 1 by one particular, then verify the realistic items with ideal price tag.

In-sale services:
Stage 1st: After we receive the order listing, we will affirm the exact design and quantity 1 by a single, then area the order checklist to each and every manufacturing facility.
Stage 2st: We will tracking the production development and quality, check the specific design and amount 1 by 1 just before delivering. Due to the fact we are exporting agent for factories, so our major time is much more shorter, high quality tracking is more stringent.
And you can acquire the all hydraulic elements from our firm, due to the fact we are specialist in entire hydraulic components, not only for some items like factories.
Phase 3st: Most affordable sea freight expense and greatest services. We are cooperating with our forwarders more than 8 many years, so we can get ideal cost and provider for our each and every client.

After-sale support:
Soon after-sale services are most important in every organization, we will do the underneath factors in every single get:
Stage 1st: Tracking the shipment and tell the customer ahead of the Arrival Date.
Phase 2st: Verify the merchandise collectively with our consumers and monitoring the quality throughout the use condition.
Stage 3st: We will charge all questions if you acquire from me, simply because popularity is most essential in exporting enterprise.
 

Certification: GS, RoHS, ISO9001
Pressure: Medium Pressure
Work Temperature: Normal Temperature
Thread Type: Internal Thread
Installation: Flared Type
Material: Stainless Steel
Samples:
US$ 50/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request