Hydraulics
9803/7130 Issue 1
8 - 2 8 - 2
Circuit Descriptions
Section E Section E
Ram Operation and End Damping
Component Key:
A Head Side Port
B Rod Side Port
C Collar
D Gland Bearing
E Slot
The illustration shows pressurised oil fed to the head side of
the ram via port A. As the pressurised oil causes the ram to
move up the cylinder bore, exhaust oil is vented from the rod
side of the rem via port B.
Spring mounted collar C is used to ‘dampen’ the end travel
of the ram. As the ram approaches full travel, the outer
diameter of the collar contacts the chamfer of gland bearing
D, preventing the exhaust oil from venting. Oil flow to
exhaust is restricted through small slot E. Restriction of oil
flow slows or ‘dampens’ ram final travel.
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