Gates Belts & Applications - Tips and guidelines written by Gates Industrial Engineers

Defining Belt Drive Efficiency

Tuesday, December 2, 2014

posted by Michelle at 1:38 PM

Belt energy losses are typically considered in terms of shaft speed and torque:

Efficiency (%) = [(Output Torque X Output RPM) / (Input Torque X Input RPM)] X 100

Torque losses occur due to friction and bending stresses. Speed losses result from belt slippage and creep. Note that slip is only a factor for V-belt drives, as it does not occur in synchronous belt drive systems.

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