Can hydraulic motor replace motor

The main source of potential energy of hydraulic motor is different from that of hydraulic motor.

The electric motor is an electric motor driven by electricity; the hydraulic motor is driven by pressure oil. How can the electric motor drive the hydraulic motor?

The advantages of hydraulic motor over motor are as follows:

1. Power density: 45KW motor weight 400-500kg, 45KW hydraulic motor weight may be only 45kg. In some cases, such as the winch of crane, only hydraulic motor can be used;

2. Good control performance: hydraulic control can make the hydraulic motor realize stepless speed change, fast response; this is much better than the motor.