Hydraulic drive system

What is a hydraulic drive system?

1.In a typical hydraulic drive system there are

The power source for the hydraulic pump (usually an internal combustion engine)

Provide a fluid hydraulic pump that drives a hydraulic motor 

2.Then the hydraulic motor provides power to the planetary gear system. The reduction planetary gear set (called planetary hub or gear hub) converts the power into torque 

3.Then transmits the torque to the sprocket (for crawler-driven machines) or the wheels (or through the wheels) Movement, such as in a skid steer loader)

Final Drive Motors

Strictly speaking, the final drive motor is the combination of a hydraulic motor with a planetary gear system. The hydraulic motor may be referred to as the hydraulic hub or hydraulic side while the gear system is the gear hub. The final drive may also be referred to as the planetary gear final drive unit or the planetary final drive.

The term final drive (by itself) is often used to refer to final drive motors, but, strictly speaking, actually refers to the speed-reducing, torque-multiplying gear system.

Travel motor

From a professional point of view, the term traveling motor is used to distinguish motors that provide power to wheels or tracks, such as rotary motors such as excavators. According to this definition, final drive is synonymous with traveling motor. Traveling motors will be more commonly used in excavators

Wheel Motors and Track Motors

The terms wheel motor and track motor refer to two different type of drive system: wheel-based and track-based, respectively. They do both refer to final drive motors, however.