SMC Networks CUJ Series Manual page 13

Proper Auto Switch Mounting Position for Stroke End Detection (ø6, ø8, ø10 common)
D-F8N, F8P, F8B
1 1
Auto Switch Mounting
Watchmakers screw driver
Set screw
When Using Cylinders Adjacently
1. When cylinders with auto switches are adjacent to one another
as shown in the figure below, provide at least the amount of
space shown in the tables below between them.
If the space is not sufficient, the magnets in adjacent cylinders may
cause auto switches to malfunction.
Auto switch
Cylinder A Cylinder B
d
L
∗ The space can be reduced by
attaching shielding plates (steel
plates 0.2 to 0.3mm thick) to the
sides of the cylinders facing each
other. In the case of bore size ø6,
be sure to attach a plate on
Cylinder A (on the surface opposite
to the switch groove).
D-F9N, F9P, F9B
• When detecting extended stroke end
3
• When tightening an auto switch mounting screw, use a watchmakers
screw driver with a handle of approximately 5 to 6mm in diameter.
• Use a tightening torque of approximately 0.10 to 0.20N⋅m.
Without shielding plate
Bore ø6 ø8 ø10
L 19 19 19.5
d 6 6 6
With shielding plate
Bore ø6 ø8 ø10
L 16 13.5 14
d 3 0.5 0.5
Mini Free-mount Cylinder
• When detecting retracted stroke end
Note 2)
10mm or more
3 + Stroke length
7 – Stroke length
in mm
in mm
Note 1) Solid state switch: D-F9
Note 2) To prevent interference caused by the lead wire, provide a clearance of 10mm
or more in addition to the dimensions stated above. Negative numbers indicate
recess, positive numbers indicate protrusion.
2. In the case of bore size ø6 cylinders with auto switches,
keep the switch groove side surface at least 2.5mm away
from a magnetic substance.
If a magnetic substance is closer than 2.5mm, auto switches
may malfunction due to a drop in magnetic force.
∗ If this surface is to be used for mounting, a spacer composed of a non-
magnetic substance (aluminum, etc.) is required as shown in the figure
below.
Non-magnetic spacer of
2.5mm or more
Series
10mm or more
7
includes one auto switch.
Auto switch
CUJ
CUJ cylinder
Magnetic
substance
10