Datasheet
1. Do not open the cushion valve more than the 
allowable number of rotations (following table).
Although the cushion valve is caulked as a retaining 
mechanism, do not open the cushion valve more than the 
allowable number of rotations. If air is supplied and operation 
started without confirming the above condition, the cushion 
valve may be ejected from the cover.
The allowable number of rotations refers to the number of 
rotations until the restrictor of the cushion valve is completely 
opened from the completely closed state.
2. Keep the screwing torque and the unscrewing 
torque of the cushion valve to the allowable torque 
or below (following table).
If a screwing torque or unscrewing torque beyond the 
allowable torque is applied, the valve will be damaged when 
the valve is closed completely or exceeds the retaining 
mechanism when the valve is opened completely, which will 
dislocate the engagement of the screw and eject the valve.
Bore size
[mm]
Cushion valve 
width across fl ats
Hexagon 
wrench
Allowable number 
of rotations
Allowable torque
[N·m]
32, 40
2
JIS 4648
Hexagon wrench key 2
4 0.02
50, 63
2
JIS 4648
Hexagon wrench key 2
4.5 0.02
80, 100
3
JIS 4648
Hexagon wrench key 3
5.5 0.06
3. Be certain to activate the air cushion at the stroke 
end.
When the air cushion is inactivated, if the allowable kinetic 
energy exceeds the value on page 5, the piston rod assembly 
or the tie-rod may be damaged. Set the air cushion to valid 
when operating the cylinder.
1. When replacing brackets, use the hexagon 
wrenches shown below.
Bore size [mm] Width across fl ats
Tightening torque [N·m]
32, 40
4 4.8
50, 63
5 10.4
80, 100
6 18.2
Warning
Caution
Adjustment
Series CP96
Specifi c Product Precautions
Be sure to read this before handling. Refer to the back cover for Safety Instructions. 
For Actuator and Auto Switch Precautions, refer to “Handling Precautions for SMC 
Products” and the Operation Manual on SMC website, http://www.smc.eu
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