What is a hydraulic telescopic shock absorber and how does it work?

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Hydraulic telescopic shock absorber: These shock absorbers consist of two or three coaxial tubes.

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If the shock absorber is three-pipe, the outermost tube is the dust collector. The way this shock absorber works when opened is that the oil is pushed downwards into the chamber above the piston and into the chamber below the piston. The oil passes through the passage. Return valve retainers Pressurize the return valve through the disc and pass through all the holes in the piston. During the opening course, the oil that is pressurized in the upper chamber of the piston flows into the chamber below the piston. This action is to compensate for the volume. Displaced is the piston shaft. When the shock absorber shaft is pulled up, the suction valve spring in the compression valve assembly is lifted by the passage of oil so that the compression disc valve and the holding valve allow the oil to pass during the shock retraction stage.