Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque.
The main roles of a coupling include the following:
・Connecting drive shafts of motors, etc. with driven shafts of ball screws etc. to transmit power.
・Providing tolerance for errors (misalignment) between the cores of the drive shaft and the driven shaft.
・Absorbing equipment impacts and vibration.
・Improving equipment performance.
Also, Coupling introduces mechanical flexibility providing misalignment for the shafts. As a result, this coupling flexibility can prevent uneven wear, vibration, and other mechanical troubles due to misalignment.