Which device is used to connect a motor to its load while allowing for misalignment?

Which device is used to connect a motor to its load while allowing for misalignment?

• A. Flexible coupling
• B. Belt drive
• C. Gearbox
• D. Clutch

Answer: (A)

Misalignment between motor and load shafts is common and can cause excessive wear if the connection is rigid. A flexible coupling provides a compliant link that transmits torque while absorbing angular, parallel (offset), and axial misalignment. This keeps shafts aligned, reduces stress on bearings and seals, and dampens vibration. Belt drives do transmit power and require careful alignment and tensioning; significant misalignment will wear belts and bearings. A gearbox changes speed and torque but doesn’t address misalignment directly. A clutch engages or disengages power, not to accommodate continuous shaft misalignment.

Misalignment between motor and load shafts is common and can cause excessive wear if the connection is rigid. A flexible coupling provides a compliant link that transmits torque while absorbing angular, parallel (offset), and axial misalignment. This keeps shafts aligned, reduces stress on bearings and seals, and dampens vibration. Belt drives do transmit power and require careful alignment and tensioning; significant misalignment will wear belts and bearings. A gearbox changes speed and torque but doesn’t address misalignment directly. A clutch engages or disengages power, not to accommodate continuous shaft misalignment.