Product Description

CHINAMFG Rigid Shaft Coupling:

Design available: one-piece or two-piece or set screw
                            With keyway or without keyway

Material available: Aluminum
                 Carbon Steel Black Oxidized
                 Stainless Steel

Size available: 6mm to 50mm shaft fit
              1/4” to 2” shaft fit
Features:  Cost saving for economy
          High torque capacity
          Zero backlash
          Without the shaft damage and fretting
          Misalignment free

Clamp Style Rigid Couplings for applications where alignment is critical, no backlash is desired, and flexibility is not required. The one-piece rigid coupling wraps around the shaft,  providing high torsional holding power without the shaft damage and fretting.  The two-piece rigid coupling has the additional benefit of allowing for disassembly and maintenance without removal of other components.

Black Oxide Steel Stainless Steel Inner Dia mm Outer Dia mm Length mm Clamp Screw Weight g
RSC1-6-ST RSC1-6-SS 6 18 30 M 3 x 8 47
RSC1-8-ST RSC1-8-SS 8 24 35 M 3 x 10 102
RSC1-10-ST RSC1-10-SS 10 29 45 M 4 x 12 185
RSC1-12-ST RSC1-12-SS 12 29 45 M 4 x 12 180
RSC1-14-ST RSC1-14-SS 14 34 50 M 5 x 16 272
RSC1-15-ST RSC1-15-SS 15 34 50 M 5 x 16 266
RSC1-16-ST RSC1-16-SS 16 34 50 M 5 x 16 261
RSC1-20-ST RSC1-20-SS 20 42 65 M 6 x 16 518
RSC1-25-ST RSC1-25-SS 25 45 75 M 6 x 16 623
RSC1-30-ST RSC1-30-SS 30 53 83 M 6 x 18 920
RSC1-35-ST RSC1-35-SS 35 67 95 M 8 x 25 1880
RSC1-40-ST RSC1-40-SS 40 77 108 M 8 x 25 2710
RSC1-50-ST RSC1-50-SS 50 85 124 M 10 x 25 3520


Black Oxide Steel Stainless Steel Inner Dia mm Outer Dia mm Length mm Clamp Screw Weight g
RSC2-6-ST RSC2-6-SS 6 18 30 M 3 x 8 47
RSC2-8-ST RSC2-8-SS 8 24 35 M 3 x 10 102
RSC2-10-ST RSC2-10-SS 10 29 45 M 4 x 12 185
RSC2-12-ST RSC2-12-SS 12 29 45 M 4 x 12 180
RSC2-14-ST RSC2-14-SS 14 34 50 M 5 x 16 272
RSC2-15-ST RSC2-15-SS 15 34 50 M 5 x 16 266
RSC2-16-ST RSC2-16-SS 16 34 50 M 5 x 16 261
RSC2-20-ST RSC2-20-SS 20 42 65 M 6 x 16 518
RSC2-25-ST RSC2-25-SS 25 45 75 M 6 x 16 623
RSC2-30-ST RSC2-30-SS 30 53 83 M 6 x 18 920
RSC2-35-ST RSC2-35-SS 35 67 95 M 8 x 25 1880
RSC2-40-ST RSC2-40-SS 40 77 108 M 8 x 25 2710
RSC2-50-ST RSC2-50-SS 50 85 124 M 10 x 25 3520

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clamp coupling

How do Clamp Couplings Contribute to Reducing Backlash and Resonance in Rotating Machinery?

Clamp couplings play a crucial role in reducing backlash and resonance in rotating machinery, enhancing the overall performance and reliability of the system. Here’s how they achieve this:

1. Backlash Reduction:

Backlash is the play or clearance between mating components in a mechanical system. In rotating machinery, backlash can lead to lost motion, reduced precision, and inefficiencies. Clamp couplings offer several features that help minimize backlash:

  • Zero-Backlash Design: Some clamp couplings are designed with a split hub and a clamping mechanism that ensures a tight fit around the shafts. This zero-backlash design eliminates any clearance between the coupling and the shafts, reducing or even eliminating backlash.
  • High Clamping Force: Clamp couplings exert a strong clamping force on the shafts, ensuring a secure and rigid connection. This prevents any relative movement between the coupling and the shafts, further reducing backlash.

2. Resonance Damping:

Resonance occurs when the natural frequency of a rotating system matches the frequency of external forces or disturbances. This can lead to excessive vibrations and potential damage to the machinery. Clamp couplings can help dampen resonance in the following ways:

  • Material Selection: High-quality materials like stainless steel or aluminum alloy are commonly used in clamp couplings. These materials possess excellent damping properties, dissipating vibrations and minimizing resonance effects.
  • Precision Machining: Clamp couplings are precisely machined to maintain balance and reduce vibration during operation. Balanced couplings minimize the likelihood of resonant frequencies being excited, contributing to a smoother operation.
  • Torsional Stiffness: Clamp couplings offer controlled torsional stiffness, which helps prevent the buildup of excessive vibration amplitudes and reduces resonance occurrences.

3. Misalignment Compensation:

Another factor contributing to backlash and resonance is misalignment between shafts. Clamp couplings can accommodate a certain degree of angular, parallel, and axial misalignments, reducing the impact of misalignment-induced backlash and vibrations.

Overall, clamp couplings provide a secure and precise connection between shafts, minimizing backlash and resonance in rotating machinery. By choosing the appropriate clamp coupling based on the specific requirements of the application, engineers can optimize the performance and efficiency of the rotating system.

clamp coupling

Differences between Clamp Couplings Made from Different Materials

Clamp couplings can be manufactured from various materials, each offering unique characteristics and suitability for different applications. Here are the main differences between clamp couplings made from aluminum, steel, and plastic:

  • Aluminum Clamp Couplings: Aluminum clamp couplings are lightweight and offer excellent corrosion resistance. They are often used in applications where weight reduction is crucial, such as in aerospace and automotive industries. However, aluminum has lower tensile strength compared to steel, making it less suitable for heavy-duty or high-torque applications.
  • Steel Clamp Couplings: Steel clamp couplings are known for their strength and durability. They can handle higher torque loads and are well-suited for heavy machinery, industrial equipment, and power transmission applications. Steel couplings are available in various grades, and surface treatments can further enhance their corrosion resistance.
  • Plastic Clamp Couplings: Plastic clamp couplings are lightweight and cost-effective. They are commonly used in applications where weight is a concern, and the torque requirements are relatively low. Plastic couplings may offer good chemical resistance and electrical insulation properties, but they may not be as durable as metal couplings and are not suitable for high-load or high-temperature applications.

Considerations: When selecting a clamp coupling material, consider the specific requirements of your application:

  • Load and Torque: Choose a material that can handle the expected load and torque of your application without exceeding the material’s limitations.
  • Environment: Consider the operating environment, including exposure to chemicals, moisture, and temperature fluctuations, to ensure the chosen material can withstand these conditions.
  • Cost and Weight: Balance the cost-effectiveness and weight-saving benefits of materials like aluminum and plastic against the strength and durability of steel.

Ultimately, the material selection for clamp couplings should be based on the specific demands of the application to ensure optimal performance and longevity.

clamp coupling

Handling Misalignment with Clamp Couplings

Yes, clamp couplings are designed to handle certain degrees of misalignment between shafts effectively. They can accommodate both angular and parallel misalignments, making them versatile for various mechanical systems.

The design of clamp couplings allows for a certain degree of flexibility and forgiveness in the coupling’s connection. When the shafts are not perfectly aligned due to angular or parallel misalignment, the clamp coupling can compensate for these variations.

The main factors contributing to the clamp coupling’s ability to handle misalignment are:

  • Flexible Material: Clamp couplings are often made of materials like aluminum, stainless steel, or other alloys with some elasticity. This flexibility enables them to absorb and compensate for minor misalignments.
  • Split Design: Clamp couplings usually have a split design with one or more screws or bolts that can be tightened to secure the coupling around the shafts. This design allows for easy installation and adjustment, making it possible to accommodate slight misalignments during assembly.
  • Tightening Mechanism: The screws or bolts used to fasten the clamp coupling can be tightened to the appropriate torque, providing a secure connection while still allowing for a certain amount of movement to handle misalignment.

However, it’s important to note that clamp couplings have limitations when it comes to misalignment. Excessive misalignment can lead to increased wear on the coupling components and shafts, reducing the coupling’s lifespan and potentially causing failure. Therefore, it’s essential to ensure that the misalignment does not exceed the coupling’s specified limits.

For more significant misalignments or applications with constant large misalignments, flexible couplings like elastomeric couplings or gear couplings may be more suitable. It’s crucial to select the appropriate coupling type based on the specific misalignment requirements of the mechanical system.

In conclusion, while clamp couplings can handle certain degrees of misalignment effectively, it is essential to stay within the recommended misalignment limits to maintain the coupling’s performance and longevity.

China Best Sales One-Piece Clamping Rigid Coupling, Aluminum, Metric, 5mm Bore a Diameter, 5mm Bore B Diameter, 15mm Od, 22mm Length  China Best Sales One-Piece Clamping Rigid Coupling, Aluminum, Metric, 5mm Bore a Diameter, 5mm Bore B Diameter, 15mm Od, 22mm Length
editor by CX 2024-01-15