Water hydraulic motors are hydraulic motors that use water as the working fluid instead of oil. They are used to convert the energy of pressurized water into rotational mechanical energy.Water hydraulic motors work on the same principle as traditional hydraulic motors, where the pressure of the working fluid is converted into mechanical energy to produce rotational motion. However, water hydraulic motors have some differences, such as their ability to operate at higher speeds and their lower viscosity compared to oil-based hydraulic motors.