China Standard 2′ ′ 500psi Stainless Steel Grooved Flexible Coupling in Stock

Product Description

Stainless Steel Grooved Pipe Coupling 2” DN50mm 600psi (4.0Mpa)

 1. Available Size: 
3/4” – 12” ( DN20-DN300mm) 

 2. Maximum Working Pressure : 
 * 600 CZPT ( 40 bar) 
 *  working pressure dependent on material, wall thickness and size of pipe .

3. Application: 
Provides a flexible pipe joint which allows for expansion, contraction and deflection
*  This product joints standard Sch 40S cut grooved pipe  
*  Suit for pipeline medium including cold water, hot water, rare acid, Oil-free air and chemical

4. Material 

   Body Material : SS304, SS316, SS316L, SS CE8MN, SS Duplex 2204, SS Duplex 2507 
   Rubber Sealing : EPDM 
   Bolt & Nut :  SS304, SS316 

5.  Dimension Sheet : 
           Typical for all sizes 


Model S30 Stainless Steel Flexible Coupling
Nominal Size Pipe O.D Working Pressure  Pipe End Separation Coupling Dimensions Coupling Bolts
X Y Z Qty Size
mm/inch (mm/inch) (psi/bar) (mm/inch) mm/inch mm/inch mm/inch pcs mm
20           3/4 26.9   1.050 600                          42  0-1.6                  0-0.06 47                   1.850 87                3.425 43              1.693 2 M10x40
25                       1 32            1.260 500            35 0-1.6                  0-0.06 53             2.087 90    3.543 43     1.693 2 M10x45
32               1 1/4 38     1.496 500              35 0-1.6                  0-0.06 58          2.283 94        3.700 44        1.732 2 M10x45
32               1 1/4 42.4   1.660 500             35 0-1.6                  0-0.06 62      2.441 106  4.173 44        1.732 2 M10x45
40                  1 1/2 48.3   1.900 500            35 0-1.6                  0-0.06 67      2.638 106   4.173 43     1.693 2 M10x45
50                      2 57     2.244 500            35 0-1.6                  0-0.06 77       3.031 116   4.567 43    1.693 2 M10x50
50               2 60.3   2.375 500            35 0-1.6                  0-0.06 78            3.071 117    4.606 43     1.693 2 M10x50
65               2 1/2 73        2.875 500             35 0-1.6                  0-0.06 94         3.700 134   5.275 44        1.732 2 M10x50
65               2 1/2 76.1       3.000 500             35 0-1.6                  0-0.06 94         3.700 134   5.275 44        1.732 2 M10x50
80               3 88.9     3.500 500             35 0-1.6                  0-0.06 110         4.330 150   5.905 45       1.771 2 M10x50
100               4 108     4.250 450           31 0-3.2                 0-0.13 135         5.315 184   7.244 47     1.850 2 M12x60
100               4 114   4.500 450           31 0-3.2                 0-0.13 139        5.472 190  7.480 48    1.890 2 M12x60
125               5 133   5.250 400           28 0-3.2                 0-0.13 164        6.456 215   8.465 48    1.890 2 M12x60
125               5 141.3   5.563 400           28 0-3.2                 0-0.13 168       6.614 215   8.465 48    1.890 2 M12x60
150              6 159   6.259 350           25 0-3.2                 0-0.13 190      7.480 240  9.448 49    1.929 2 M12x70
150              6 168.3  6.625 350           25 0-3.2                 0-0.13 198      7.795 246     9.685 49    1.929 2 M12x70
200             8 219.1  8.625 350           25 0-3.2                 0-0.13 253  9.961 318    12.519 57    2.244 2 M12x70
250           10 273   10.750 300           21 0-3.2                 0-0.13 315   12.401 396  15.590 59         2.322 2 M20x110
300            12 323.9  12.750 300           21 0-3.2                 0-0.13 372  14.645 452  17.795 60      2.362 2 M20x110


flexible coupling

How does a flexible coupling deal with backlash and torsional stiffness?

A flexible coupling deals with backlash and torsional stiffness in the following ways:

  • Backlash: Backlash refers to the play or clearance between mating teeth in mechanical systems. In certain couplings, such as gear couplings, some degree of backlash is unavoidable due to the space between the teeth. However, flexible couplings with elastomeric or beam-type elements typically have minimal to no backlash. The flexibility of these elements allows them to maintain continuous contact and transmit torque smoothly without any gaps or play between components.
  • Torsional Stiffness: Torsional stiffness is the ability of a coupling to resist rotational deformation or twisting under torque. It is essential to have adequate torsional stiffness in some applications to ensure accurate motion transmission and responsiveness. Flexible couplings exhibit a balance between torsional stiffness and flexibility. While they allow for a degree of angular and parallel misalignment, they still possess sufficient torsional stiffness to transmit most of the torque efficiently. This characteristic helps maintain the precision of motion control systems and prevents power losses due to deformation.

The design and materials used in flexible couplings contribute to their ability to address both backlash and torsional stiffness effectively. Here are some key features:

  • Elastomeric Elements: Couplings with elastomeric elements, such as rubber or polyurethane, provide excellent flexibility to absorb misalignments and dampen vibrations. They also exhibit minimal backlash as the elastomeric material maintains continuous contact between the coupling components.
  • Beam-Type Couplings: Beam-type couplings use thin metal beams to transmit torque. These couplings offer high torsional stiffness while still accommodating misalignments. The beams can flex slightly under torque, absorbing shocks and compensating for misalignment without compromising torsional rigidity.
  • Composite Couplings: Some flexible couplings use composite materials that combine the advantages of different materials to achieve specific performance characteristics. These composites can offer low backlash and precise torsional stiffness, making them suitable for demanding applications.
  • High-Quality Manufacturing: The precision manufacturing of flexible couplings ensures that components fit together with minimal clearances, reducing backlash. Additionally, high-quality materials contribute to better torsional stiffness and overall performance.

Overall, flexible couplings strike a balance between flexibility to accommodate misalignments and sufficient torsional stiffness to transmit torque efficiently. By effectively addressing backlash and torsional stiffness, these couplings contribute to the smooth and reliable operation of various mechanical systems.

flexible coupling

Can flexible couplings be used in precision manufacturing equipment, such as CNC machines?

Yes, flexible couplings can be used in precision manufacturing equipment, including CNC (Computer Numerical Control) machines. CNC machines require high accuracy and precision during operation to produce complex and intricate parts. Flexible couplings play a vital role in such equipment by providing various benefits that enhance their performance and reliability.

  • Compensation for Misalignment: CNC machines often have multiple moving parts and axes that need precise alignment. Flexible couplings can accommodate small misalignments between these components, ensuring smooth and reliable power transmission without inducing additional stress or strain on the system.
  • Vibration Damping: Precision manufacturing requires minimizing vibrations that could affect the quality of the finished product. Flexible couplings with damping properties can absorb and dissipate vibrations, resulting in better surface finishes and accuracy of the machined parts.
  • Torsional Flexibility: CNC machines may experience torque fluctuations during acceleration, deceleration, or tool changes. Flexible couplings with torsional flexibility can handle these variations and prevent torsional vibrations from affecting the machining process.
  • Backlash Compensation: Some types of flexible couplings, such as beam couplings, offer minimal or near-zero backlash. This characteristic is essential in CNC machines, as it helps maintain positional accuracy during direction changes and reversals.
  • High Torque Transmission: CNC machines may require high torque transmission capabilities, especially in heavy-duty cutting or milling operations. Flexible couplings can handle substantial torque loads while still providing flexibility to address misalignments.
  • Reduced Maintenance: With the ability to absorb shocks and compensate for misalignment, flexible couplings can extend the life of other mechanical components in the CNC machine, reducing overall maintenance requirements and downtime.

It’s important to select the appropriate type and size of flexible coupling based on the specific requirements of the CNC machine, including torque, speed, misalignment, and environmental conditions. Regular maintenance and inspection of the flexible couplings will ensure optimal performance and contribute to the overall precision and efficiency of the CNC machine.

flexible coupling

How do flexible couplings compare to other types of couplings in terms of performance?

Flexible couplings offer distinct advantages and disadvantages compared to other types of couplings, making them suitable for specific applications. Here is a comparison of flexible couplings with other commonly used coupling types in terms of performance:

  • Rigid Couplings:

Rigid couplings are simple in design and provide a solid connection between two shafts, allowing for precise torque transmission. They do not offer any flexibility and are unable to compensate for misalignment. As a result, rigid couplings require accurate shaft alignment during installation, and any misalignment can lead to premature wear and increased stress on connected equipment. Rigid couplings are best suited for applications where shaft alignment is precise, and misalignment is minimal, such as in well-aligned systems with short shaft spans.

  • Flexible Couplings:

Flexible couplings, as discussed previously, excel at compensating for misalignment between shafts. They offer angular, parallel, and axial misalignment compensation, reducing stress on connected components and ensuring smooth power transmission. Flexible couplings are versatile and can handle various applications, from light-duty to heavy-duty, where misalignment, vibration damping, or shock absorption is a concern. They provide a cost-effective solution for many industrial, automotive, and machinery applications.

  • Oldham Couplings:

Oldham couplings are effective at compensating for angular misalignment while maintaining constant velocity transmission. They offer low backlash and electrical isolation between shafts, making them suitable for precision motion control and applications where electrical interference must be minimized. However, Oldham couplings have limited capacity to handle parallel or axial misalignment, and they may not be suitable for applications with high torque requirements.

  • Gear Couplings:

Gear couplings are robust and can handle high torque levels, making them suitable for heavy-duty applications such as mining and steel mills. They offer good misalignment compensation and have a compact design. However, gear couplings are relatively more expensive and complex than some other coupling types, and they may generate more noise during operation.

  • Disc Couplings:

Disc couplings provide excellent misalignment compensation, including angular, parallel, and axial misalignment. They have high torsional stiffness, making them ideal for applications where accurate torque transmission is critical. Disc couplings offer low inertia and are suitable for high-speed applications. However, they may be more sensitive to shaft misalignment during installation, requiring precise alignment for optimal performance.

  • Conclusion:

The choice of coupling type depends on the specific requirements of the application. Flexible couplings excel in compensating for misalignment and vibration damping, making them versatile and cost-effective solutions for many applications. However, in situations where high torque, precision, or specific electrical isolation is necessary, other coupling types such as gear couplings, disc couplings, or Oldham couplings may be more suitable. Proper selection, installation, and maintenance of the coupling are essential to ensure optimal performance and reliability in any mechanical system.

China Standard 2′ ′ 500psi Stainless Steel Grooved Flexible Coupling in Stock  China Standard 2′ ′ 500psi Stainless Steel Grooved Flexible Coupling in Stock
editor by CX 2023-09-13

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