A 5-Step Guide

Step 1: Verify the Coupling Type Meets Your Core Needs
This type of coupling is a hybrid, combining benefits from several designs. Choose it if you need:

• High Torque Transmission: “High Transmission” indicates a robust design, often with a reinforced elastic element (e.g., polyurethane or Hytrel) for greater torque capacity than a standard jaw coupling.

• Precision & Zero Backlash: Many of these couplings are designed to minimize or eliminate backlash, making them suitable for servo applications.

• Keyless Clamping Hubs: The “Clamping” mechanism uses a taper lock or collet system to grip the shaft without a keyway, providing excellent concentricity, ease of installation/removal, and perfect balance for high speeds.

• Vibration Damping & Misalignment: The “Elastic” element (spider or sleeve) absorbs vibration and compensates for minor angular and parallel misalignment.

Step 2: Determine Torque, Speed, and Shaft Size
These are the primary sizing parameters.

• Calculate Required Torque: Use the formula: Torque (N-m) = [Power (kW) × 9550] / Speed (RPM).

• Apply a Service Factor: Multiply your calculated torque by a service factor based on the driven equipment (e.g., 1.5 for pumps, 2.0 for conveyors).

• Match to Coupling Rating: Select a coupling size where its Rated Torque exceeds your calculated torque (with service factor).

• Shaft Diameter: This is critical for the clamping hub. You need the exact shaft diameter for both the motor and driven side. The clamping range must be compatible.

• Maximum RPM: Ensure your operating speed is below the coupling’s maximum speed rating.

Step 3: Define Performance Requirements

• Torsional Stiffness: For high transmission applications, high torsional stiffness is often required to maintain precise positioning between the motor and load. Check the manufacturer’s specifications.

• Backlash: Confirm if the coupling is rated as “zero backlash” or “low backlash” if it’s for a servo or stepper motor application.

• Misalignment Capacity: While elastic, these couplings have limits. Check the manufacturer’s specifications for the maximum allowable angular and parallel misalignment.

Step 4: Select the Elastic Element Material
The spider or sleeve material defines the coupling’s environmental compatibility and damping characteristics.

Step 5: Finalize with a Trusted Technical Supplier
Choose a supplier who provides:

• Detailed Technical Data: Clear torque/speed curves, stiffness values, and misalignment limits.

• Clamping Force Data: Information on the clamping hub’s holding torque to ensure it can handle your application’s load.

• Customization (OEM/ODM): Ability to provide specific bore sizes and custom elements.

Summary: When to Choose This Coupling?

Choose a High Transmission Elastic Clamping Coupling if your application requires:

• High Torque in a compact design.

• Precision and zero/low backlash for servo or stepper systems.

• The installation convenience and balance of a keyless clamping hub.

• Moderate vibration damping and misalignment compensation.

Final Recommendation: This coupling is an excellent choice for modern, high-performance automation, robotics, and precision machinery. Always cross-reference your calculated torque and shaft size with the manufacturer’s selection charts. For optimal performance, ensure the shafts are properly prepared (clean, burr-free, and within specified tolerances) for the clamping hub to grip correctly.