Shaft Coupling

Flexible shaft couplings connect the output shaft of a stepper motor to a driven load or mechanical assembly. They transmit torque while allowing a defined level of shaft misalignment. Depending on the design, a coupling may accommodate angular, parallel, or axial offset and can help limit vibration transfer within the drive system.

Common coupling types used with stepper or servo motors include rigid couplings, flexible beam couplings, and jaw-type couplers. Selection should be based on torque rating, shaft diameter compatibility, allowable misalignment, backlash specification, and environmental conditions such as temperature or exposure to contaminants.

When choosing a shaft coupling, confirm that the rated torque meets application requirements and that bore size matches the motor and load shafts. Consider whether low backlash, torsional stiffness, or vibration isolation is required for the intended motion control system.