Belt pull estimates the force a belt exerts on a shaft. It is the force applied to a shaft by the two belt spans entering and exiting a pulley. Belt pull does not account for pulley weight or pulley location on a shaft. While related, bell pull should not be considered to be interchangeable with bearing load or over hung load values.
Belt pull values can be calculated using Gates Design Flex® and Design IQ® software programs, or by using formulas found in the Gates drive design manuals.