Speed ratio = number of motor revolutions ÷ speed reducer output revolutions ("speed ratio" also known as "gear ratio")
   1. Know the motor power and speed ratio and the use of factors, find the reducer torque as follows:
       Torque = 9550 × motor power ÷ motor power input speed × speed ratio × coefficient of use
   2. Known torque and reducer output revolutions and the use of coefficient, the reducer required power distribution machine with the following formula:
       Motor power = torque ÷ 9550 × motor power input speed ÷ speed ratio ÷ coefficient of use