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...of the cylinder. But energy-absorbing capacity depends on the size of the shock absorber and the method of returning the piston to its rest position. Spring-return shock absorbers are more compact and convenient than external-accumulator models, but do not have as much energy capacity. Accumulator shock...

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...over the entire stroke. A pressurized diaphragm accumulator and spring-loaded check valve in the piston head prevent free travel during initial displacement of the rod. The diaphragm is sealed on the piston rod and diaphragm retainer, and a special antirotation device ensures diaphragm rolling action...

Show More high-pressure fluid that retracts the cylinder rod, but the weight of the piston rod and attached stringer rods pressurizes fluid on the extend stroke, powering a hydraulic motor that drives a pump. Diverting this high-pressure fluid to charge an accumulator lets it supplement pump flow...

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