SMC Networks CUJ Series User manual

Mini Free-mount Cylinder
Series CUJ
ø4, ø6, ø8, ø10
CAT.ES20-157 A

Mini Free-mount Cylinder
• Length is shortened by approx. 64% max.
• Volume is reduced by approx. 70% max.
(As compared with SMC Series CU cylinders without magnet)
C
+ Stroke
c
+ Stroke
b
A
a
B
CUJ
CU
Features 1
Miniature body
Dimensions (without magnet) (mm)
Numbers in parentheses are the dimensions of SMC Series CU cylinders.
Bore
Size
4
6
8
10
A (a)B (b)C (c)
10 (—)
13 (13)
13 (—)
13.5 (15)
15 (—)
19 (22)
21 (—)
22 (24)
13 (—)
13 (33)
13 (—)
13 (36)
10
15
19
13 + Stroke
17
13 18 + Stroke
26
21
13 18 + Stroke
33
22
13.5 18 + Stroke
38
ø10
ø8
ø6
ø4
CUJB4-4D
CDUJB6-8D
CDUJB8-15D
CDUJB10-20D

Series CUJ ø4, ø6, ø8, ø10
Features 2
(mm)
E
Pitch dimensions (without magnet)
Bore Size
4
6
8
10
E
10
13
13
13.5
Tolerance h9
Solid state switch
Model D-F8
Clean room series
Series 10-, 11-CUJ
With front boss (h9)
Centering can be done easily.
Series Variations
Action
Double acting
Single acting (spring return)
Double acting
Single acting (spring return)
Double acting
Single acting (spring return)
Double acting
Single acting (spring return)
Series
CUJ
Bore size
(mm)
Rod end
configuration
Stroke (mm)
Clean room
series
468101520
4
6
8
10


 









Male thread
Without thread
Nil
Female thread
Male thread
Solid state
switch
D-F8
D-F9
Auto switch
Free
Free
Free
Free

Concentrates wiring and
piping on one surface
Allows more efficient installation, since four
directions can be used freely.
Free-mount design
allows installation from
four directions. Fine pitch
mounting is
possible.
Two auto
switches
can be installed
even for 4mm
strokes.
Rod cover
Easy seal replacement
Seals can be replaced easily just by removing
the rod cover.

Series CUJ
How to Order
ø4, ø6, ø8, ø10
Mini Free-mount Cylinder
CDUJ B 6
6D
D
10
10
Basic (through type)
Mounting
B
4mm
6mm
8mm
10mm
Bore size
4
68
10
8
10
F8N S
With Auto Switch
With auto switch
(built-in magnet)
6mm
8mm
10mm
Bore size
6
Cylinder stroke (mm)
Double acting
Single acting (spring return)
Action
D
S
2 pcs.
1 pc.
Number of
auto switches
Nil
S
∗For applicable auto switch part numbers, select
a model from Table 2 below.
∗F9 includes one auto switch.
Auto switch type
Without auto switch (built-in magnet) Nil
Rod end female thread (without thread for ø4)
Rod end male thread
Rod end thread
Nil
M
Refer to "Table 1 Standard strokes" below.
CUJ B
Bore size (mm)
4
6
8, 10
4
6
8, 10
Double
acting
Single acting
(spring return)
Standard stroke (mm)
4, 6, 8, 10
4, 6, 8, 10, 15
4, 6, 8, 10, 15, 20
4, 6
4, 6, 8
4, 6, 8, 10
Table 1 Standard strokes
1
∗Lead wire length symbols: 0.5m ....... Nil (Example) F8N
3.0m ....... L (Example) F8NL
∗ Auto switches marked with a "" symbol are produced upon receipt of order.
––
Type
Table 2 Applicable auto switch models Refer to pages 11 to 14 for detailed specifications.
Special
function
Electrical
entry
Indicator
light Wiring
(output)
Perpendicular
Load voltage Auto switch
part number
Electrical entry
direction
Lead wire
length (m) Applicable
load
In-line
0.5
(Nil) 3
(L) 5 (Z)
DC AC
Grommet
Yes
3 wire
(NPN)
3 wire
(PNP)
24V
––
F8N
––
F8P
––
F8B
F9N
––
F9P
––
F9B
––
Relay,
PLC
––
2 wire
12V


















––
Solid state switch
Without Auto Switch
Action

Theoretical Output/Double Acting
Spring Reaction Force/Single Acting
Weights/Double Acting
Single Acting
Symbol
0.7
8.79
6.59
19.79
10.99
35.18
21.44
54.97
35.18
0.5
6.28
4.71
14.13
7.85
25.13
15.31
39.26
25.13
0.3
3.76
2.82
8.48
4.71
15.07
9.18
23.56
15.07
Operating pressure (MPa) (N)
Operating
direction Piston area
(mm²)
12.6
9.4
28.3
15.7
50.3
30.6
78.5
50.3
OUT
IN
OUT
IN
OUT
IN
OUT
IN
Rod size
(mm)
Bore size
(mm)
2
4
5
6
4
6
8
10
Bore size
(mm)
4
6
8
10
Spring
condition
Pre-loaded
Loaded
Pre-loaded
Loaded
Pre-loaded
Loaded
Pre-loaded
Loaded
4
1.70
2.55
2.45
3.33
4.67
6.47
5.04
6.77
6
1.27
2.55
2.01
3.33
3.76
6.47
4.18
6.77
8
––
––
1.57
3.33
2.86
6.47
3.31
6.77
10
––
––
––
––
1.96
6.47
2.45
6.77
Stroke (mm)
(N)
Bore size
(mm)
CUJB4
CUJB6
CUJB8
CUJB10
Standard stroke (mm)
7.2
12.4
15.6
17.9
7.9
13.6
17.0
19.4
46
8.6
14.8
18.4
20.8
810
9.3
16.0
19.7
22.3
15
––
18.9
23.0
25.9
20
––
––
26.4
29.5
––
2.7
3.0
3.2
Additional weight
With magnet
Rod end male thread
With magnet
Rod end male thread
0.4
0.8
1.5
2.6
(g)
Additional weight
––
2.4
2.5
2.4
0.4
0.8
1.5
2.6
CUJB4
CUJB6
CUJB8
CUJB10
Bore size
(mm)
Standard stroke (mm)
46810
7.2
12.8
15.8
17.9
7.9
14.0
17.2
19.4
––
15.2
18.6
20.8
––
––
19.9
22.3
(g)
Double acting/Single rod
Single acting/Spring return
→
IN
Spring in pre-loaded condition Spring in loaded condition
←
OUT
When the spring is contracted by applying air
When the spring is set in the cylinder
2
Specifications
Mini Free-mount Cylinder Series CUJ
Action
Fluid
Proof pressure
Max. operating pressure
Ambient and fluid
temperature
Cushion
Lubrication
Piston speed
Thread tolerance
Stroke length tolerance
Mounting
Min. operating
pressure MPa Double acting
Single acting
(spring return)
Double acting/Single acting (spring return)
Air
1.05MPa
46810
0.1MPa
0.2MPa
Without auto switch:
- 10°C to 70°C (with no freezing)
With auto switch: - 10°C to 60°C (with no freezing)
None
Non-lube
50 to 500mm/s
JIS class 2
Through hole
+0.5
0
0.7MPa
0.15MPa
0.3MPa
0.35MPa
OUT IN
Bore size (mm)

D
C
4
5
5
5
D
14
18
18
18
M2.5 x 14L
M3 x 18L
M3 x 18L
M3 x 18L
Model Mounting bolt
CUJB4-4
-6
-8
-10
CUJB6-4
-6
-8
-10
-15
CUJB8-4
-6
-8
-10
-15
-20
CUJB10-4
-6
-8
-10
-15
-20
B
21
23
25
27
22
24
26
28
33
22
24
26
28
33
38
22
24
26
28
33
38
M2.5 x 21L
M2.5 x 23L
M2.5 x 25L
M2.5 x 27L
M3 x 22L
M3 x 24L
M3 x 26L
M3 x 28L
M3 x 33L
M3 x 22L
M3 x 24L
M3 x 26L
M3 x 28L
M3 x 33L
M3 x 38L
M3 x 22L
M3 x 24L
M3 x 26L
M3 x 28L
M3 x 33L
M3 x 38L
A
4
5
5
5
Model Mounting bolt
CUJB4-4
-6
-8
-10
CUJB6-4
-6
-8
-10
-15
CUJB8-4
-6
-8
-10
-15
-20
CUJB10-4
-6
-8
-10
-15
-20
3
Series CUJ
Mounting
Through hole mounting bolts are available for mounting a cylinder.
To order bolts, add "CUJ-" at the beginning of the bolt description.
(Example) CUJ-M3 x 27L
A A C
B B
For axial mounting
Without Auto Switch For side mounting
D
18
18
18
M3 x 18L
M3 x 18L
M3 x 18L
C
5
5
5
Model Mounting bolt
CDUJB6-4
-6
-8
-10
-15
CDUJB8-4
-6
-8
-10
-15
-20
CDUJB10-4
-6
-8
-10
-15
-20
B
27
29
31
33
38
27
29
31
33
38
43
27
29
31
33
38
43
M3 x 27L
M3 x 29L
M3 x 31L
M3 x 33L
M3 x 38L
M3 x 27L
M3 x 29L
M3 x 31L
M3 x 33L
M3 x 38L
M3 x 43L
M3 x 27L
M3 x 29L
M3 x 31L
M3 x 33L
M3 x 38L
M3 x 43L
A
5
5
5
Model Mounting bolt
CDUJB6-4
-6
-8
-10
-15
CDUJB8-4
-6
-8
-10
-15
-20
CDUJB10-4
-6
-8
-10
-15
-20
For axial mounting
With Auto Switch For side mounting
Axial mounting Side mounting

4
 Clean Room Series
How to Order
Specifications
The specifications are the same as those for the standard
double acting type. Refer to page 2.
Dimensions
Mini Free-mount Cylinder Series CUJ
10 6
Clean room series
Magnet
Double acting
Rod end thread
8D
C D UJB
10
11 Relief type
Vacuum type
Nil
6mm
8mm
10mm
Without
With (built-in)
D
Nil
MRod end female thread
Rod end male thread
Number of auto switches
Nil
S2 pcs.
1 pc.
Auto switch type
Nil Without auto switch (built-in magnet)
Bore size
6
8
10
F8N
Stroke
The specifications are the same as those for the standard
double acting type. Refer to the standard stroke table on page 1.
∗Applicable auto switch part numbers are the same
as those for the standard double acting type.
Refer to page 1.
Without auto switch With auto switch
ABCABC
24 18 29 2311.5 16.5
6, 8, 10
Bore size
(mm)
(mm)
2-M3 x 0.5
(port size)
M3 x 0.5
(Relief port: 10–See above)
(Vacuum port: 11–See above)
3C +Stroke
B+ Stroke
A+ Stroke
3.5
11 3.5

5
Series CUJ
Construction
Double acting
Single acting
Without magnet
Rod end male thread
For ø4
Built-in magnet
Built-in magnetWithout magnet
!3 weq!1 ryoe
t
!2
uir y o ewieu !0
Replacement parts: Seal kits (double acting)
Kit no.
CUJB4-PS
CUJB6-PS
CUJB8-PS
CUJB10-PS
Bore size
4
6
8
10
Contents
Above numbers 11, 12, 13 and
an exclusive grease pack.
Replacement parts: Seal kits (single acting)
Kit no.
CUJB4-S-PS
CUJB6-S-PS
CUJB8-S-PS
CUJB10-S-PS
Bore size
4
6
8
10
Contents
Above number 11 and
an exclusive grease pack.
Parts list
No. Description
Cylinder tube
Rod cover
Piston
Piston rod
Seal retainer
Magnet retainer
Return spring
Bronze element
Magnet
Rod end nut
Piston seal
Rod seal
Tube gasket
Material
Aluminum alloy
Bronze alloy
Stainless steel
Aluminum alloy
Stainless steel
Stainless steel
Aluminum alloy
Piano wire
Sintered metal BC
––
Steel
NBR
NBR
NBR
Note
Hard anodized
Electroless nickel plated
Chromated
CUJB4 only
Chromated
Nickel plated
1
2
3
4
5
6
7
8
9
10
11
12
13
Without switch
With switch

6
Mini Free-mount Cylinder Series CUJ
Dimensions for ø4 Double Acting/Single Acting
Without magnet/CUJB4
12.5
7
6
1.6
ø2
M2 x 0.4
Width across flats 4
2.5
Element
Single acting
4.6
4
M2 x 0.4
1.6
Rod end nut part no.: NTJ-004
Rod end male thread
Note) The angular position of the width across flats is not fixed with respect to the tube.
10
5
15
2-ø2.8 through
18.5 + Stroke
13 + Stroke
63.5
7.5 + Stroke 2-ø2.8 through
Width across flats 5
2-M3 x 0.5
(bore size)
2.5
7.57.5
5
5
ø6h9
ø2
2.5
3

7
Series CUJ
Single acting
Single acting
Rod end nut part no.: NTJ-006A
Rod end male thread
Element
12.5
6.5
5.5
2.4
ø4
ø9h9
M3 x 0.5
Width across flats 5.5
Width across flats 3.5
2.5
5.5
6.4
M3 x 0.5
2.4
2-ø3.3 through 2-ø3.3 through
Width across flats 8
2-M3 x 0.5
(bore size)
13
7
3
19
M2.5 x 0.45 effective depth 5
19 + Stroke
13 + Stroke
6.5 + Stroke3
63.5
ø4
ø9h9
Width across flats 3.5
910
7
7
3
2.5
3
24 + Stroke
18 + Stroke
11.5 + Stroke
3
[5.3]
[Approx.24]
[Auto switch]
Element
Note) The angular position of the width across flats is not fixed with respect to the tube.
Dimensions for ø6 Double Acting/Single Acting
Without magnet/CUJB6
Built-in magnet/CDUJB6