i shall state other reasons. hydraulic motors can be self locking, without requiring any extra items. it depends on the design of motor and its valving. an electric motor requires some type of locking device, in the event of power failure. read more
Very simple. Electric motors cannot be used to lift the heavy weights. The main reason is torque, speed, power consumption and efficiency of the motor. Due to heavy weight lifting, electric motor need, high power consumption, high torque. And electric motor has rotating slip and size of the motor also need more. read more