Hydraulics glossary

TermDefinition
HägglundsHägglunds Drives (now part of the Bosch-Rexroth Group) in Mellansel, Sweden, exports its hydraulic motors all over the world.
HaweHAWE Hydraulik SE is a company that manufactures hydraulic components and system in which all pressurised components are made of steel. The company was founded in 1949 in Munich by Karl Heilmeier and Wilhelm Weinlein.
Hawe InLineIn 1999 Hawe took over InLine Hydraulik GmbH to produce axial piston variable pumps.
HydacHYDAC International GmbH is a manufacturer of hydraulic components and complete systems based in Sulzbach in the Saar.
hydraulicThe use of liquids to transmit force and energy.
hydraulic accumulatorHydraulic oil is pressed under pressure in a pressure tank filled with nitrogen. The hydraulic oil compromises the nitrogen and later on is available in the system as stored energy.
Hydraulic cylinderConverts the energy from the hydraulic fluid into a simple linear force.
hydraulic filterA prerequisite for smooth operation in a hydraulics system is the filtration of the hydraulic liquid through hydraulic filters. Hydraulic filters remove impurities that are present on moving parts due to wear, in the hydraulic oil due to ageing residues, and in the area surrounding the hydraulic system due to dirt particles.
hydraulic hoseA maximum period of use of 6 years including a storage period of at most 2 years is generally recommended by the trade association for hydraulic hoses (BGR237).
hydraulic motorHydraulic motors or hydromotors convert the energy generated by hydraulic pumps back into mechanical work. Many pumps can be used as hydromotors as well without changes to the construction.
hydraulic pumpHydraulic pumps convert mechanical energy into hydraulic energy (or vice versa). As a rule, the pump draws the pressurised fluid from a storage tank and conveys it to the pump outlet. From here, it is conducted via valves to cylinders or hydromotors (load consumers) and back to the storage tank.
hydraulic valveTo control and regulate hydraulic processes.
hydraulics oilsThe pressurised fluids used in hydraulic systems must fulfil different functions: pressure transmission, corrosion protection, lubrication, dust removal etc.
HydromatikWith the acquisition of Hydromatik GmbH, Elchingen, a manufacturer of axial piston pumps and motors, Hydromatik became a Bosch Rexroth brand in 1972.
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