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SJ1000/2000/3000/4000
Specific Product Precautions 6
Be sure to read this before handling the products. Refer to the back cover for safety instructions.
For 3/4/5-port solenoid valve precautions, refer to the "Handling Precautions for SMC Products"
and the "Operation Manual" on the SMC website: https://www.smcworld.com
One-touch Fittings
Caution
The pitch of the SJ series piping ports (A, B, etc.) has been set
assuming the use of KJ series One-touch fittings. Therefore,
when using fittings with an M3 or M5 port block, there may be
some interference between fittings, depending on the type and
size, so please use after checking dimensions in the catalog for
the pipe fitting being used.
1. Tube attachment/detachment for One-touch fittings
1) Tube attachment
(1) Take a tube having no flaws on its periphery and cut it
off at a right angle. When cutting the tube, use tube cut-
ters TK-1, 2, or 3. Do not use pinchers, nippers, scis-
sors, etc. If cutting is done with tools other than tube cut-
ters, the tube may be cut diagonally or become flattened,
etc., making a secure installation impossible, and caus-
ing problems such as the tube pulling out after installa-
tion or air leakage.
Allow some extra length in the tube.
(2) Grasp the tube and push it in slowly, inserting it securely
all the way into the fitting.
(3) After inserting the tube, pull on it lightly to confirm that it
will not come out. If it is not installed securely all the way
into the fitting, this can cause problems such as air leak-
age or the tube pulling out.
2) Tube detachment
(1) The 4(A) and 2(B) ports use the KJ series, so the tube
can be removed by pressing on part of the release but-
ton. However, for the 1(P) and 3/5(E) ports, please
press the release button evenly as before.
(2) Pull out the tube while holding down the release button
so that it does not come out. If the release button is not
pressed down sufficiently, there will be increased bite on
the tube and it will become more difficult to pull it out.
(3) When the removed tube is to be used again, cut off the
portion which has been chewed before reusing it. If the
chewed portion of the tube is used as is, this can cause
trouble such as air leakage or difficulty in removing the
tube.
4(A) port
Hold down part of the release button with your finger or
a similar tool, as shown in the diagram, and pull out in
the direction indicated by the arrow.
143
1(P) port
3/5(E) port
2(B) port
Series
Other Tube Brands
Caution
1. When using other than SMC brand tube, confirm that
the following specifications are satisfied with respect
to the tube outside diameter tolerance.
1) Nylon tube
within ±0.1 mm
2) Soft nylon tube
within ±0.1 mm
3) Polyurethane tube within +0.15 mm, within –0.2 mm
Do not use tube which does not meet these outside diameter
tolerances. It may not be possible to connect them, or they may
cause other trouble, such as air leakage or the tube pulling out
after connection.
How to Use Plug Connector
Caution
When attaching and detaching a connector, first shut off the elec-
tric power and the air supply.
Also, crimp the lead wires and sockets securely.
1. Connector attachment /detachment
• To attach a connector, hold the lever and connector unit be-
tween your fingers and insert straight onto the pins of the so-
lenoid valve so that the lever's pawl is pushed into the
groove and locks.
• To detach a connector, remove the pawl from the groove by
pushing the lever downward with your thumb, and pull the
connector straight out.
Cover
Connector
2. Crimping of lead wires and sockets
Peel 3.2 to 3.7 mm of the tip of the lead wire, enter the core
wires neatly into a socket and crimp it with a special crimp
tool. Be careful so that the cover of the lead wire does not en-
ter into the crimping part. (Please contact SMC for the dedicat-
ed crimping tools.)
Core wire crimping area
Socket
(Part no.: DXT170-71-1)
Hook
Concave
Pin
Lever
Hook
Socket
Lead wire
Crimping area
Core wire
Lead wire
Insulation
0.2 to 0.33 mm
2
Max. cover diameter: ø1.7 mm
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