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On impact by mass
material in motion, the piston rod gradually moves into
the shock absorber and
stops up the orifices (Deceleration of cross section of
orifice) and the hydraulic fluid in inner tube
spurts out outer tube throughout the orifices and the
hydraulic fluid flows in the top end of the inner
tube throughout the oil returning hall and the excess
hydraulic fluid gets stored in accumulator
temporarily.
At the end of the impact stroke, the return spring pushes
the piston and the hydraulic fluid flow into
inner tube rapidly throughout check value for next cycle.
This system absorbs the impact shock gradually and at
a constant rate (Deceleration of cross sec
tion of orifices and deceleration ratio of the piston
back speed) and the piston transer is smooth and
quiet.
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