Hydrolic Motors
Hydrolic motors are able to produce much more power than other motors of the same size and for this reason are used for larger loads than electric motors. Hydraulic systems are frequently used to provide high power for use in dangerous applications. Hydrolic motors are used in machinery that requires power for several different functions at the same time because a single pump can power several different motors. They are most commonly used in aircraft, heavy duty vehicles, industrial lifting and in machinery that requires strong pressurized actions. Additionally, hydrolic motors are frequently used to power automated manufacturing systems. Hydrolic motors are also used in 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.
Hydrolic motors are fairly simple machines that are composed of a reservoir, a pump and rotating machinery. The motor is the actuator that converts the pressure of the fluid into torque and rotational energy. The pump is powered by a small pneumatic engine and drives the hydrolic motor. Oil usually serves as the pressurized fluid that create motion. Fluid is pushed from an inlet valve to an outlet valve through a series of gears, rotating screws, turning vanes or pistons. The liquid in motion causes the rotating components to turn very quickly and generate mechanical energy because the gears, screws, vanes or cylinders are linked to the machinery. The energy is transferred from the motor to the operating system. After traveling through the motor, the oil is returned to a reservoir, where it is filtered and reused. There are three kinds of hydrolic motors: gear, vane and piston type. Each is identified by the design of the rotating component inside. Hydrolic gear motors are the least expensive and have the ability to operate at high speeds. However, they are also the noisiest of the hydrolic motors and are relatively inefficient at low speeds. Hydrolic vane motors are the most popular general purpose motor while piston pumps are the most expensive. They perform well at high torque, low speed operations in high system pressure applications and can be either axial or radial.
