Datasheet
1. During installation, secure the rod cover and tighten
by applying an appropriate tightening force to the
retaining nut or to the rod cover body.
If the head cover is secured or the head cover is tightened, the
cover could rotate, leading to the deviation.
2. Tighten the retaining screws to an appropriate
tightening torque within the range given below.
ø10: 5.9 to 6.4 N·m, ø16: 10.8 to 11.8 N·m
3. To remove and install the retaining ring for the
knuckle pin or the clevis pin, use an appropriate
pair of pliers (tool for installing a type C retaining
ring). In particular, use a pair of ultra-mini pliers for
removing and installing the retaining ring on the
ø10 cylinder.
4. In the case of auto switch rail mounting type, do not
remove the rail that is mounted. Because retaining
screws extend into the cylinder, this could lead to
an air leak.
5. Please contact SMC when the stroke exceeds 100
mm for the axial foot mounting style.
<Precautions on the single acting cylinder>
1) Do not operate it in such a way that a load would be applied during
the retraction of the piston rod of the spring return style, or during
the extension of the piston rod of the spring extend style. The
spring that is built into the cylinder provides only enough force to
retract the piton rod. Thus, if a load is applied, the piston rod will
not be able to retract to the end of the stroke.
2) A breather hole is provided in the cover surface. Make sure not to
block this hole during installation, as this could lead to a
malfunction.
<Precautions on the non-rotating cylinder>
1) Tighten the retaining screws to an appropriate tightening torque
within the range given below.
ø10: 10.8 to 11.8 N·m, ø16: 20 to 21 N·m
2) Do not operate it in such a way that rotational torque would be
applied to the piston rod. If rotational torque is applied, the non-
rotating guide will become deformed, thus affecting the non-
rotating accuracy.
Allowable rotational torque (N·m)
ø10 ø16
0.02 0.04
3) To screw a bracket onto the threaded portion at the tip of the piston
rod, make sure to retract the piston rod entirely, and place a
wrench over the fl at portion of the rod that protrudes. To tighten,
take precautions to prevent the tightening torque from being
applied to the non-rotating guide.
Caution
Be sure to read before handling. Refer to back cover for Safety Instructions. For Actuator
and Auto Switch Precautions, refer to “Handling Precaution for SMC Products” and the
Operation Manual on SMC website, http://www.smcworld.com
Series CJ2
Specifi c Product Precautions
1. Use within the specifi ed cylinder speed and kinetic
energy ranges.
Otherwise, cylinder and seal damage may occur.
2. Do not apply excessive lateral load to the piston
rod.
Easy checking method
Minimum operating pressure after the cylinder is mounted to
the equipment (MPa) = Minimum operating pressure of
cylinder (MPa) + {Load weight (kg) x Friction coefficient of
guide/Sectional area of cylinder (mm
2
)}
If smooth operation is confi rmed within the above value, the
load on the cylinder is the resistance of the thrust only and it
can be judged as having no lateral load.
Warning
Mounting
96
CJ2CJ2WCJ2CJ2KCJ2KCJ2ZCJ2ZWCJ2RCJ2RCJ2RKCJ2RK
StandardBuilt-in Speed ControllerDirect Mount
Double Acting, Single Rod
Double Acting, Double Rod
Single Acting, Spring Return/Extend
Double Acting, Single Rod
Single Acting, Spring Return/Extend
Double Acting, Single Rod
Double Acting, Double Rod
Double Acting, Single Rod
Single Acting, Spring Return/Extend
Double Acting, Single Rod
Auto Switch
Made to Order
Single Acting, Spring Return/Extend
Non-rotating RodDirect Mount, Non-rotating Rod