The load torque, as seen at the motor side of the gearbox, will be reduced bya factor of 80, from 2500 to 31 Nm at the motor. We must also allow for friction inthe gearbox , equiv alent to perhaps 20% of the full- load torque, so the maximummotor torque required for hoisting will be 37 Nm, and this torque must be availableat all speeds up to the maximum of 1520 rev/min
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