Hydraulics motors of any size are able to produce greater amounts of power than similarly-sized electric motors and for this reason are used for large loads. High speed hydraulic motors offer even more energy which further widens the gap between hydraulic and electric motors. These motors are part of a hydraulic drive system along with hydraulic pumps, tubes and cylinders.
The main enclosure and interior components are made from metal such as steel or iron so they can withstand high pressures and operating speeds. High speed hydraulic motors are widely used in aircraft, vehicles, industrial lifting and in machinery that requires strong pressurized actions. High speed hydraulic motors, when used in a suitable system, are able to accomplish large amounts of work in short periods of time.
Additionally, hydraulic motors are frequently used in automated manufacturing systems, trenchers, automobiles, construction equipment, drives for marine winches, waste management and recycling processes, wheel motors for military vehicles, self-driven cranes, excavators, forestry, agriculture, conveyor and auger systems, dredging and industrial processing.
High speed hydraulic motors are simple machines that are composed of a reservoir, a pump and rotating machinery. The pump is connected by a line to a motor that draws the fluid, which is usually oil, from a reservoir and into the motor. The fluid forces motion by the moveable parts of the motor as it rotates. The rotation of the motor turns a coupled shaft which provides mechanical motion; the motor serves as the actuator that converts the pressure of the fluid into torque and rotational energy.
The fluid is discharged, filtered and reused. There are three main kinds of hydraulic motors: gear, vane and piston type. The differences among them are related to how the hydraulic fluid causes motion. Gear motors have interlocking gears that are rotated by streams of oil or water, the two most common fluids, being pumped down onto the teeth.
Vane motors have flat blades that move in and out of slots in a rotating wheel and piston type hydraulic motors have at least two pistons that transfer pressure back and forth to generate power. Radial piston motors are very efficient but have limited high speed capabilities. High speed hydraulic motors are able to provide energy for many different functions simultaneously because of the amount of power they can generate and their efficiency; one pump in a system can power several motors.