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About Hydraulic Motors and Hydraulic Motor Manufacturers Including: High Speed Hydraulic Motors, High Torque Hydraulic Motors, Hydraulic Drive Motors, Hydraulic Gear Motor, Hydraulic Power Units, Hydraulic Pump Motor, Hydraulic Systems, Hydraulic Wheel Motors, Hydraulics Motors, Hydrolic Motors, Radial Piston Hydraulic Motors & Small Hydraulic Motors.
Hydraulic motors are a common component in a larger
hydraulic system. Hydraulic motors convert hydraulic energy into mechanical
energy. In industrial hydraulic
systems, pumps and motors are typically
used in conjunction with proper valves
and piping to form a hydraulic powered transmission. Usually, a pump
is connected via a carrier line to a motor, which then draws fluid from
a reservoir and forces it into the motor. The fluid forces the movable
components of the motor into motion, which in turn rotates the attached
shaft. The shaft, which is mechanically linked to the work load, provides
rotary mechanical motion. Finally, the fluid is discharged at low pressure
and transferred back to the pump.
Most hydraulic motor manufacturers produce fixed-displacement hydraulic
motors. Displacement is a motor rating refering to the amount of flow
that is required for a specified drive speed. Variable-displacement piston
motors are also utilized, but mostly in hydrostatic drives. Other important
ratings of a motor are torque and pressure. These ratings indicate how
much load a hydraulic motor is capable of handling. Hydraulic motors
are entirely enclosed and self-contained. These characteristics allow
them to be submerged or operated in many hostile environments.
Three types of hydraulic motors are gear, vane and piston-type motors.
Each of these types can be produced by hydraulic motor manufacturers
as either unidirectional or reversible, although most motors used in
mobile equipment are the latter. In hydraulic gear motors, one of the
two driven gears is attached to the output shaft. Gear motors, which
are the least expensive but the noisiest of the hydraulic motors, have
the ability to operate at high speeds; however, they are inefficient
at low speeds. In a hydraulically balanced vane motor, the vane on the
inlet port side of the motor is subject to full system pressure, while
the chamber leading the vane is subject to the much lower outlet pressure,
forcing oil through the motor and, as a result, developing torque. Hydraulic
vane motors are the most popular general-purpose motor, but they are
limited by their tolerance to high pressure systems and the higher percentage
of slippage or internal leakage relative to the lower total fluid flow
at low speeds. Hydraulic piston pumps can be either axial or radial and
are generally the most expensive of the hydraulic motors. They have advantages
over the other motors, however, in that piston motors are far more adaptable
to high torque, low speed operation and higher system pressure applications.
Hydraulic motor manufacturers provide hydraulic motors that are solutions
in applications involving infinite speed control, stalling under full
torque, high power-to-weight ratio and small size. Their characteristics
make them useful in a wide variety of industries. The aerospace industry
uses hydraulic motors to actuate wing flaps. The food processing industry
uses them to power automated manufacturing machinery. Hydraulic motors
are also used in trenchers, construction equipment, waste management
and recycling, forestry, agriculture, dredging and industrial processing.
Other applications for hydraulic motors include drives for marine winches,
submersible ROV's, conveyor and auger systems and mining equipment.
Types of Hydraulic Motors
Hydraulic Motor Terms
-
Air in hydraulic fluid.
- A container that
stores fluid under pressure. Accumulators, the common types of which are
piston, bladder and diaphragm, are used as an energy source or to absorb
hydraulic shock.
- A device that converts
hydraulic energy into linear mechanical motion and force.
- The amount of
fluid that passes through a pump, motor or cylinder in a period of time
or during a single actuation event, such as a revolution or stroke.
- The
degree of friction that results from the contact between the moving surfaces
of a motor shaft.
- A device within a hydraulic
system that is used to remove contaminants from the oil.
- A system
that utilizes fluid pressure to transmit and control power.
- A toothed wheel used
to transfer mechanical energy.
- The science dealing
with the transmission of force through the medium of a contained fluid.
- A device
that is used to troubleshoot and check hydraulic-powered system components.
- A tube, pipe or hose
that acts as a conductor of hydraulic fluid.
- A slippery and viscous
liquid that is not miscible with water. Oil is often used in hydraulic
systems because it cannot be compressed.
- A cylindrical piece
of metal that moves up and down inside the cylinder of a hydraulic motor.
- A plate on
the side of a gear or vane pump or motor cartridge that is used to keep
clearance and slippage to a minimum.
- A mechanical device that
transports liquids and gases by suction or pressure.
- In hydraulics,
the condition engendered by an obstruction or restriction in the flow
path.
- A device that is mechanically
attached to the work load and provides rotary motion in motors.
- The movement of an
element of a valve spool, cylinder rod or pump or motor displacement in
a straight line that sets the limits of motion.
- A restriction to
the normal flow of fluid.
- The measure of the
force applied to produce rotational motion, usually measured in foot-pounds.
- A device that controls
fluid flow rate, direction or pressure.
- In a hydraulic motor,
a flat surface that rotates and pushes against the fluid.