Is the power size of an electric wrench the power of its internal motor?
Motor rotor no power size, replace the rotor need to know the rotor diameter, stack length, groove number, rotor shaft output gear parameters, rear bearings, the outside diameter, the size of the fan, and so on.
Electric wrench power generally refers to the size of the motor input power, motor power generally refers to the output power, the ratio between the two is the efficiency of the motor.
