FUNCTION
CYLINDERS
1
3
CYLINDERS 3L0AQ00
CYLINDERS
The pressure oil flowing alternately in through the outlet
and inlet on both sides (head and rod sides) of the piston
acts on the piston and its force causes the piston to move
back and forth.
For those cylinders with a cushion mechanism, the shock
resulting from the piston colliding with the cover at the
stroke end is dampened by the mechanism.
Cushion mechanism
When the piston (1) approaches the stroke end and ap-
pears likely to bump into the cover (2), the cushion bear-
ing (3) that is moving ahead of the piston enters the cush-
ion seal (4). Since this shuts off the return channel for the
hydraulic oil on the back of the piston, the oil is expelled
only from the throttle hole or the groove provided in the
cushion bearing (3). This causes the piston (1) backpres-
sure to increase, slowing the piston speed.
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