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2. Hydraulic motor - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_motor

   Hydraulic motors usually have a drain connection for the internal leakage, which means that when the power unit is turned off the hydraulic motor in the drive system will move slowly if an external load is acting on it. Thus, for applications such as a crane or winch with suspended load, there is always a need for a brake or a locking device.

3. Single- and double-acting cylinders - Wikipedia

   en.wikipedia.org/wiki/Single-_and_double-acting...

   A single-acting cylinder in a reciprocating engine is a cylinder in which the working fluid acts on one side of the piston only. A single-acting cylinder relies on the load, springs, other cylinders, or the momentum of a flywheel, to push the piston back in the other direction. Single-acting cylinders are found in most kinds of reciprocating ...

4. Hydraulic cylinder - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_cylinder

   If we call a normal rod cylinder single stage, telescopic cylinders are multi-stage units of two, three, four, five, or more stages. In general telescopic cylinders are much more expensive than normal cylinders. Most telescopic cylinders are single acting (push). Double acting telescopic cylinders must be specially designed and manufactured. [18]

5. Power transfer unit - Wikipedia

   en.wikipedia.org/wiki/Power_transfer_unit

   In aviation, a power transfer unit (PTU) is a device that transfers hydraulic power from one of an aircraft's hydraulic systems to another in the event that the other system has failed or been turned off. The PTU is used when, for example, there is right hydraulic system pressure but no left hydraulic system pressure.

6. Piston - Wikipedia

   en.wikipedia.org/wiki/Piston

   Pistons of Hydraulic cylinders used in a hot press. Hydraulic cylinders can be both single-acting or double-acting. A hydraulic actuator controls the movement of the piston back and/or forth. Guide rings guides the piston and rod and absorb the radial forces that act perpendicularly to the cylinder and prevent contact between sliding the metal ...

7. Category:Hydraulics - Wikipedia

   en.wikipedia.org/wiki/Category:Hydraulics

   Hydraulic power network; Hydraulic roughness; ... Power transfer unit; ... Pressure regulator; Hydraulic pump; S. Hydraulic seal; Single- and double-acting cylinders ...