Hydraulic Mining Excavator is an important engineering activity which is necessary to exploit the much needed mineral resources which are buried deep beneath the earth crust and are indispensable for the development of an industrial sector and infrastructure. These excavators are very similar to any other hydraulic excavator, except they are much larger.

Hydraulic driven motor generators are the new wave of mobile generators. This hydraulic driven motor generator eliminate the engine that normally drives a generator set and instead drives it with a hydraulic motor by tapping into vehicle's engine with a hydraulic pump. It uses a vehicle's engine as its main power source. It draws from its horsepower rather than auxiliary, engine power source. The features are typically about 50% lighter, runs much quieter, cleaner, no carbon exhaust, system runs cooler, no fuel, less expensive to operate, maintenance is eliminated, no pollution.

A hydraulic motor works in reverse compared to a pump. The pump drives its fluid, while the motor is driven by its fluid. Thus, the pump draws in fluid and pushes it out, converting mechanical force into fluid force. Whereas in the motor, fluid is forced in and exhausted out, converting fluid into mechanical force. Hydraulic motor converts hydraulic working energy into rotary mechanical energy, which is applied to a resisting object by means of a shaft. The rotary or turning effort capability of the motor is call torque. Torque indicates that a force is present at a distance from the motor shaft. A resisting object attached to a motor shaft generates a torque. This is a resistance for the motor, which must be overcome by hydraulic pressure acting on the motor's operating mechanism.