Hydraulic and Pneumatic Knowledge
Fluid Power Equipment

Like an electrical storage battery, a hydraulic accumulator stores potential power, in this case liquid under pressure for future conversion into useful work. This work can include operating cylinders and fluid motors, maintaining the required system pressure in case of pump or power failure, and compensating for pressure loss due to leakage. Accumulators can be employed as fluid dispensers and fluid barriers and can provide a shock-absorbing (cushioning) action.

On military equipment, accumulators are used mainly on the lift equipment to provide positive clamping action on the heavy loads when a pumps flow is diverted to lifting or other operations. An accumulator acts as a safety device to prevent a load from being dropped in case of an engine or pump failure or fluid leak. On lifts and other equipment, accumulators absorb shock, which results from a load starting, stopping, or reversal.

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