Doc. No. ZQ-OM01301-A
- 15 -
3.4.2 Piping to ports
1) When piping fittings, etc. are connected to the pilot pressure exhaust (PE) port (M3) for
the single unit type, secure the part provided with the port, tighten it by hand, then
additionally tighten by approximately one fourth of a turn using an appropriate tool.
(Recommended tightening torque: 0.4 to 0.5 Nm)
2) When piping fittings, etc. are connected to the air pressure supply (P) port (M5) for the
single unit type, secure the part provided with the port, tighten it by hand, then
additionally tighten by approximately one sixth to one fourth of a turn using an
appropriate tool. (Recommended tightening torque: 1.0 to 1.5 Nm)
3.4.3 Piping with one-touch fittings
■
Tube attachment
1) Cut the tube perpendicularly, being careful not to damage the external surface. When cutting
the tube, use tube cutters. If the tube is cut by any tools other than a tube cutter, the cut
surface of the tube will be slanted or flat, making it difficult to connect securely, causing the
tube to come off or air leakage after the tube is connected. Also, use a tube of ample length.
2) Grasp the tube and push it in slowly, inserting it securely all the way into the fitting.
3) After inserting the tubing, pull on it gently to confirm it is secure. Incorrect insertion may cause
air leakage or disconnection.
4) Prevent the connected tube from being rotated. The fitting may be damaged.
■
Removal of the tube
1) Press the release button evenly and firmly.
2) Pull out the tubing while keeping the release button depressed. If the release button is not
held down sufficiently, the tubing cannot be withdrawn.
3) If the removed tubing is to be reused, cut off the section of the tubing that has been gripped.
Reusing this portion of the tube can cause problems such as air leakage or difficulty in
removing the tube.
■
Other manufacturer’s tube
When using a brand of tube other than SMC, confirm that the following specifications are
satisfied with respect to the tube outside diameter tolerance.
1) Nylon tubing
/-0.1 mm
2) Soft nylon tubing
/-0.1 mm
3) Polyurethane tubing
0.15 mm or -0.2 mm
Do not use tubing that does not meet these outside diameter tolerances. Connection to the
fitting may fail, causing disconnection of the tube and air leakage.