China manufacturer Jt Type Torsionally Single Rigid All Steel Elastic Diaphragm Clamping Laminated Membrane Disc Couplings

Product Description

Jt Type Torsionally Single Rigid All Steel Elastic Diaphragm Clamping Laminated Membrane Disc Couplings


Metal flex couplings are disc type couplings in which several flexible metallic elements are alternately attached with bolts to opposite flanges. As polymeric elastomer is replaced by metal disc, Metal Flex coupling provides excellent temperature capability without sacrificing angular and axial misalignment. The coupling provides low axial and bending stiffness while possessing high torsional rigidity. The stretched shim pack design of CHINAMFG Metal Flex couplings provides zero backlash. CHINAMFG Metal Flex couplings are available up to 13367 Nm torque with single shim pack (UMK) and double shim pack (UMS) series.


1.Power to weight ratio high

2.Accommodates angular and axial misalignments

3.High temperature application

4.Visual inspection is possible without dismantling equipments

5.Low axial stiffness with high torsional rigidity

6.High-speed capacity

7.Range up to 12000 Nm

8.Added advantage of stretch fitted shim pack

Material Available

Stainless Steel:SS201,SS301, SS303, SS304, SS316, SS416 etc.
35CrMo 40CrMo42 CrMo
Steel:mild steel, Carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#
Aluminum:AL6061, Al6063, AL6082, AL7075, AL5052, A380 etc.
Iron:A36, 45#, 1213, 12L14, 1215 etc.
Plastic:ABS, PC, PE, POM, Delrin, Nylon, , PP,PEI, Peek
or as customer required .

CNC Turning

φ0.5 – φ300 * 750 mm,+/-0.005 mm

CNC Milling

510 * 1571 * 500 mm(max),+/-0.001 mm-+/-0.005 mm

Surface Finish

Aluminum:Clear Anodized,Color Anodized,Sandblast Anodized,Chemical Film,Brushing,Polishing,Chroming.
Stainless Steel:Polishing,Passivating,Sandblasting,Laser engraving.
Steel:Zinc plating,Oxide black,Nickel plating,Chrome plating,Carburized,
Heat treatment,Powder Coated.
Plastic:Painting,Chrome plating,polishing,Sandblast,Laser engraving.

Drawing Format


Test Equipment

Measurement instrument, Projector, CMM, Altimeter, Micrometer, Thread Gages, Calipers, Pin Gauge etc.



Production workshop:

Manufacturer of Couplings, Fluid Coupling, JAW Coupling, can interchange and replacement of lovejoy coupling and so on.

A coupling can interchange and replacement of lovejoy coupling is a device used to connect 2 shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join 2 pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or objects. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded. Selection, installation and maintenance of couplings can lead to reduced maintenance time and maintenance cost.

Company information:

elastic coupling

Limitations and Disadvantages of Elastic Couplings

While elastic couplings offer various benefits, they also come with certain limitations and disadvantages that engineers and designers need to consider:

  • Torsional Stiffness: Elastic couplings provide flexibility, but this can lead to lower torsional stiffness compared to rigid couplings. In applications requiring high torsional stiffness, elastic couplings might not be the ideal choice.
  • Energy Loss: Due to the elastic nature of the material, a portion of the transmitted torque can be absorbed as deformation energy in the elastomer. This can result in energy losses and reduce overall efficiency.
  • Wear and Fatigue: The elastomer element in elastic couplings can experience wear, fatigue, and deterioration over time, especially in applications with high loads or extreme operating conditions. Regular maintenance and monitoring are essential to ensure proper functionality.
  • Temperature Sensitivity: Some elastomer materials used in elastic couplings might be sensitive to temperature fluctuations. Extreme temperatures can affect the properties of the elastomer and compromise the coupling’s performance.
  • Alignment Requirements: While elastic couplings can accommodate minor misalignments, excessive misalignment can still lead to premature wear and reduced coupling lifespan. Proper alignment remains important for optimal performance.

Engineers and designers must carefully assess the specific requirements of their applications to determine if the advantages of elastic couplings outweigh the potential limitations and disadvantages.

elastic coupling

Backlash in Elastic Couplings

Backlash refers to the amount of play or clearance between mating components in a mechanical system, particularly in elastic couplings. In an elastic coupling, backlash is the angular movement or rotation that occurs when there is a change in direction of the input shaft without an immediate response from the output shaft.

Backlash is a result of the elasticity and flexibility of the coupling’s components, such as the elastomer or other flexible elements. When the input direction changes, the elastic elements need to overcome their deformation before transmitting torque to the output shaft. This delay can lead to a temporary loss of motion and reduced precision in positioning applications.

Backlash can have a negative impact on the accuracy, repeatability, and overall performance of a machinery system. It can result in positioning errors, reduced responsiveness, and even potential damage to the system. Therefore, minimizing backlash is crucial in applications that require high precision and responsiveness.

Engineers can address backlash in elastic couplings by selecting couplings with lower compliance, optimizing the design to minimize the flexibility of the coupling elements, and using additional components like anti-backlash devices or preloaded mechanisms.

elastic coupling

Factors to Consider When Selecting an Elastic Coupling

Engineers must carefully evaluate several factors when selecting an appropriate elastic coupling for a specific application. These factors ensure that the coupling can effectively meet the requirements of the machinery and system:

  • Torque Transmission: Consider the amount of torque that needs to be transmitted between the connected shafts. Ensure that the coupling’s torque rating matches or exceeds the application’s torque requirements.
  • Misalignment Compensation: Evaluate the expected misalignments between the shafts, such as angular, parallel, and axial misalignments. Choose a coupling with the appropriate flexibility and misalignment capacity to accommodate these variations.
  • Vibration Dampening: Determine the level of vibration present in the system and select a coupling with the necessary torsional elasticity to dampen vibrations and provide smoother operation.
  • Operating Speed: Consider the rotational speed of the connected shafts. Some elastic couplings may have speed limitations, so choose a coupling that can handle the desired operating speed without issues.
  • Environmental Conditions: Assess the operating environment, including temperature, humidity, and the presence of contaminants. Choose a coupling material that can withstand the conditions and resist corrosion or degradation.
  • Space Limitations: Take into account the available space for installing the coupling. Some couplings may have compact designs that are better suited for confined spaces.
  • Shaft Sizes: Ensure that the coupling is compatible with the diameters of the connected shafts. Verify the coupling’s bore sizes and choose one that matches the shaft sizes.
  • Installation and Maintenance: Consider the ease of installation and maintenance. Some couplings have simpler installation procedures, while others might require more complex procedures.
  • Cost: Evaluate the budget for the coupling. While high-performance couplings might have added benefits, they could also come at a higher cost. Balance the performance requirements with budget constraints.

By carefully assessing these factors and selecting the appropriate elastic coupling, engineers can ensure optimal performance, longevity, and reliability of the machinery and systems they design.

China manufacturer Jt Type Torsionally Single Rigid All Steel Elastic Diaphragm Clamping Laminated Membrane Disc Couplings  China manufacturer Jt Type Torsionally Single Rigid All Steel Elastic Diaphragm Clamping Laminated Membrane Disc Couplings
editor by CX 2023-09-18