User Manual

32
310-3000 IHT
Axial Piston: Type of design for hydraulic motors and pumps in which the pistons are arranged
parallel with the spindle (input or output shaft).
Bantam Duty: A descriptive term relating to the product capacity (meaning: light duty).
Bypass Valve: A valve whose primary function is to open a path for the fl uid to bypass the motor
or pump. Also referred to occasionally as the freewheel valve or dump valve.
Case Drain Line (Return Line): A line returning fl uid from the component housing to the res-
er voir.
Cavitation: A concentrated gaseous condition within the fl uid causing the rapid implosion of a
gas eous bubble.
Center Section: A device which acts as the valve body and manifold of the transmission.
Charge Pump: A device which supplies replenishing fl uid to the fl uid power system (closed
loop).
Charge Pressure: The pressure at which replenishing fl uid is forced into a fl uid power system.
Charge Relief Valve: A pressure control valve whose primary function is to limit pressure in the
charge circuit.
Check Valve: A valve whose primary function is to restrict fl ow in one direction.
Closed Loop: A sealed and uninterrupted circulating path for fl uid fl ow from the pump to the
motor and back.
Decay Rate: The ratio of pressure decay over time.
End Cap: See “Center Section”
Entrained Air: A mechanical mixture of air bubbles having a tendency to separate from the liquid
phase.
Gerotor: A positive displacement pump frequently used as a charge pump.
Hydraulic Motor: A device which converts hydraulic fl uid power into mechanical force and mo-
tion by transfer of fl ow under pressure.
Hydraulic Pump: A device which converts mechanical force and motion into hydraulic fl uid pow er
by producing fl ow.
Hydrostatic Pump: See “Hydraulic Pump”
SECTION 6. GLOSSARY OF TERMS