Auxiliary hydraulic system

Auxiliary hydraulic system

An auxiliary hydraulic system delivers pressurized hydraulic fluid from a hydraulic pump to operate auxiliary equipment or attachments. The addition of an auxiliary hydraulic system on heavy construction equipment increases the versatility of the vehicle by allowing it to perform addition functions with different attachments.


An auxiliary hydraulic system is needed to operate heavy construction attachments, such as:
*Hydraulic breakers
*Hydraulic brush cutters
*Hydraulic compactors
*Hydraulic crushers
*Hydraulic grapples
*Hydraulic processors
*Hydraulic shears
*Hydraulic thumbs
*Hydraulic tilt bucket
*Hydraulic augers


Depending upon the vehicle, whether an excavator, a back-hoe or a front-end-loader, the auxiliary hydraulic system may vary. Vehicle interface fittings, length from pump to attachment and vehicle control systems require various configurations of an auxiliary hydraulic system. Auxiliary hydraulic systems usually include external fluid fittings to facilitate connecting and disconnecting the hydraulic fluid supply lines of the attachments to the vehicles' hydraulic pump. They also usually include valves configured to control the supply of hydraulic fluid through the fittings.

Different attachments also have varying requirements of an auxiliary hydraulic systems with respect to timing, rate and control of fluid flow. Attachments, such as breakers and compactors only need hydraulic flow in one direction, where as thumbs, shears and grapples need two-direction hydraulic flow. Hydraulic flow and pressure are also specific to the attachment. A shear requires a much higher flow and pressure than a tilt bucket.


Auxiliary hydraulic systems are also referred to as auxiliary hydraulics, hydraulic kits, wet kits and plumbing kits.

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Auxiliary power unit — An auxiliary power unit (APU) is a device on a vehicle whose purpose is to provide energy for functions other than propulsion. Different types of APU are found on aircraft, as well as on some large ground vehicles.AircraftFunctions of APU The… …   Wikipedia

  • Hydraulic machinery — are machines and tools which use fluid power to do work. Heavy equipment is a common example.In this type of machine, high pressure hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The… …   Wikipedia

  • Hydraulic fluid — Hydraulic fluids are a large group of fluids used as the motive medium in hydraulic machinery. Fluid types include synthetic compounds, mineral oil, water, and water based mixtures. The fluids are found in machinery and equipment ranging from… …   Wikipedia

  • Breaker (hydraulic) — A breaker is a powerful percussion hammer fitted to an excavator for demolishing concrete structures or rocks. It is powered by an auxiliary hydraulic system from the excavator, which is fitted with a foot operated valve for this purpose.Breakers …   Wikipedia

  • Hydraulic jack — Jack Jack (j[a^]k), n. [F. Jacques James, L. Jacobus, Gr. ?, Heb. Ya aq[=o]b Jacob; prop., seizing by the heel; hence, a supplanter. Cf. {Jacobite}, {Jockey}.] [1913 Webster] 1. A familiar nickname of, or substitute for, John. [1913 Webster] You… …   The Collaborative International Dictionary of English

  • Engine indicating and crew alerting system — An example of information found on a EICAS Engine Indicating and Crew Alerting System (EICAS) is an integrated system used in modern aircraft to provide aircraft crew with aircraft engines and other systems instrumentation and crew annunciations …   Wikipedia

  • Ignition system — For other uses, see Ignition system (disambiguation). An ignition system is a system for igniting a fuel air mixture. Ignition systems are well known in the field of internal combustion engines such as those used in petrol (gasoline) engines used …   Wikipedia

  • Ice protection system — Ice protection systems are designed to keep atmospheric ice from accumulating on aircraft flight surfaces while in flight. The effects of ice accretion on an aircraft can cause the shape of airfoils and flight control surfaces to change, which… …   Wikipedia

  • Electromagnetic Aircraft Launch System — (EMALS) is a system under development by the United States Navy to launch aircraft from carriers using a linear motor drive instead of steam pistons used in conventional aircraft catapults. This technology has the advantage of gradually… …   Wikipedia

  • Agni missile system — Infobox Weapon is missile=yes name=Agni I/Agni II/Agni III/Agni IV caption= origin= IND type=Medium Range Ballistic Missile (Agni I) Intermediate Range Ballistic Missile (Agni II, Agni III) Intercontinental Ballistic Missile (Agni IV) used by=… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”