Mini Free Mount Cylinder, ø12, ø16, ø20, CUJ Series (Part Numbers - CAD Download)

An air cylinder manufactured by SMC.
[Features]
· Miniature body.
· Concentrates wiring and piping on one side.
· With counterbore for mounting.

(i)Remark

See catalog for specification details.
CAD data is not supported for some model numbers.
Product images may be representative images.

Part Number

Once your search is narrowed to one product,
the corresponding part number is displayed here.

Product specification
Part Numbers
Catalog

Mini Free Mount Cylinder ø12, ø16, ø20, CUJ Series Specifications

How to Order

Specifications

Bore size (mm)		12	20
Action		Double acting; Single acting, spring return
Fluid		Air
Proof pressure		1.05 MPa
Minimum operating pressure	Double acting	0.07 MPa	0.05 MPa
Minimum operating pressure	Single acting, spring return	0.25 MPa	0.18 MPa
Maximum operating pressure		0.7 MPa
Ambient and fluid temperature		Without auto switch: -10 to 70℃ (No freezing) With auto switch: -10 to 60℃ (No freezing)
Cushion		Rubber bumper
Lubrication		Non-lube
Piston speed		50 to 500 mm/s∗
Stroke length tolerance		0 to +1.0
Mounting		CUJB: Through-hole (lateral, axial direction: 2 locations each) CUJS: Through-hole (axial direction: 2 locations)

∗ Depending on the circuit condition, the piston speed may not reach the maximum speed.

Symbol

Double acting, single rod, rubber bumper

Single acting, spring return, rubber bumper

Standard Stroke

Bore size (mm)	Operating direction	Standard stroke (mm)
12	Double acting	5, 10, 15, 20, 25, 30, 35, 40, 45, 50
16		5, 10, 15, 20, 25, 30, 35, 40, 45, 50
20		5, 10, 15, 20, 25, 30, 35, 40, 45, 50
12	Single acting, spring return	5, 10
16
20

Construction

Double Acting

Single Acting, Spring Return

Component Parts

No.	Description	Material	Note
1	Cylinder tube	Aluminum alloy	Hard anodized
2	Piston	Aluminum alloy	Trivalent chromated
3	Piston rod	Stainless steel
4	Collar	Aluminum alloy	Hard anodized
5	Magnet holder	Aluminum alloy	Trivalent chromated
6	Retaining ring	Steel for special applications	Phosphate coated
7	Magnet	-
8	Return spring	Steel wire	Zinc trivalent chromated
9	Element	Bronze casted	(for ø12, ø16)
9	Plug with fixed restrictor	Structural steel	Nickel plated (for ø20)
10	Damper A	Resin
11	Damper B	Resin
12	Rod end nut	Steel wire	Chromated
13	Piston seal	NBR
14	Rod seal	NBR
15	O-ring	NBR

Replacement Parts: Seal Kit
Double Acting

Bore size (mm)	Kit no.	Contents
12	CUJB12-PS	Set of ⑬⑭⑮ and grease pack.
16	CUJB16-PS
20	CUJB20-PS

∗ Seal kit ⑬ to ⑮comes as a set. Use the kit number for each bore size.
Single Acting, Spring Return

Bore size (mm)	Kit no.	Contents
12	CUJB12-S-PS	Set of ⑬ and grease pack.
16	CUJB16-S-PS
20	CUJB20-S-PS

∗ Use the following part number for ordering a grease pack only.
Grease part no.: GR-L-005 (5 g)

Dimensions: ø12, ø16, ø20 Double Acting; Single Acting, Spring Return

Part no.	Bore size (mm)	d	H₁	B₁	C₁
NTJ-015A	12	M5 x 0.8	4	8	9.2
NT-015A	16	M6 x 1	5	10	11.5
NT-02	20	M8 x 1.25	5	13	15

Bore size (mm)	A	B	C	D	E	GB	H	J	K	L	MM	NN	N	P	Q
12	3.5	17	26.5	6	6	4	11	15.5	11	8	M5 x 0.8	M3 x 0.5 effective depth of thread 6	3.5	M3 x 0.5	4.4 through
16	3.5	21	29.5	8	6	4	12.5	17	12.5	11.5	M6 x 1	M4 x 0.7 effective depth of thread 8	5.5	M3 x 0.5	4.4 through
20	4.5	25	36	10	7	5.5	15.5	21	15	13.5	M8 x 1.25	M5 x 0.8 effective depth of thread 7	7	M5 x 0.8	5.5 through

Bore size (mm)	QA	R	T	T'	U	V	W	Without magnet				Built-in magnet
Bore size (mm)	QA	R	T	T'	U	V	W	F	GA	S	Z	F	GA	S	Z
12	7.5 depth, depth of counterbore 7	11	9	10.5	14	5	26	3.5 (5)	7.5	15.5 (17)	19 (20.5)	7.5 (9)	7.5	19.5 (21)	23 (24.5)
16	7.5 depth, depth of counterbore 7	12.5	10	12	15.5	6	27.5	4	8.5	16.5	20	8.5	9	21	24.5
20	9.5 depth, depth of counterbore 9	15.5	12	14	18.5	8	30	5.5	8.5	19.5	24	9.5	8.5	23.5	28

∗ ( ): Single acting, spring return

Part no.	Bore size (mm)	d	H₁	B₁	C₁
NTJ-015A	12	M5 x 0.8	4	8	9.2
NT-015A	16	M6 x 1	5	10	11.5
NT-02	20	M8 x 1.25	5	13	15

Bore size (mm)	A	B	C	D	GB	H	J	K	L	MM	NN	N	P	Q	QA
12	3.5	17	26.5	6	4	11	15.5	11	8	M5 x 0.8	M3 x 0.5 effective depth of thread 6	3.5	M3 x 0.5	4.4 through	7.5 depth, depth of counterbore 5.5
16	3.5	21	29.5	8	4	12.5	17	12.5	11.5	M6 x 1	M4 x 0.7 effective depth of thread 8	5.5	M3 x 0.5	4.4 through	7.5 depth, depth of counterbore 5.5
20	4.5	25	36	10	5.5	15.5	21	15	13.5	M8 x 1.25	M5 x 0.8 effective depth of thread 7	7	M5 x 0.8	5.5 through	9.5 depth, depth of counterbore 6.5

Bore size (mm)	R	T	T'	U	V	W	Without magnet			Built-in magnet
Bore size (mm)	R	T	T'	U	V	W	GA	S	Z	GA	S	Z
12	11	9	10.5	14	5	26	7.5	15.5 (17)	19 (20.5)	7.5	19.5 (21)	23 (24.5)
16	12.5	10	12	15.5	6	27.5	8.5	16.5	20	9	21	24.5
20	15.5	12	14	18.5	8	30	8.5	19.5	24	8.5	23.5	28

∗ ( ): Single acting, spring return

Data to be displayed: 30; 45; 60

Part Number
CUJB20-20DM
CUJB20-25D
CUJB20-25DM
CUJB20-30D
CUJB20-30DM
CUJB20-35D
CUJB20-35DM
CUJB20-40D
CUJB20-40DM
CUJB20-45D
CUJB20-45DM
CUJB20-50D
CUJB20-50DM
CUJS12-5D
CUJS12-5DM
CUJS12-5S
CUJS12-5SM
CUJS12-10D
CUJS12-10DM
CUJS12-10S
CUJS12-10SM
CUJS12-15D
CUJS12-15DM
CUJS12-20D
CUJS12-20DM
CUJS12-25D
CUJS12-25DM
CUJS12-30D
CUJS12-30DM
CUJS16-5D
CUJS16-5DM
CUJS16-5S
CUJS16-5SM
CUJS16-10D
CUJS16-10DM
CUJS16-10S
CUJS16-10SM
CUJS16-15D
CUJS16-15DM
CUJS16-20D
CUJS16-20DM
CUJS16-25D
CUJS16-25DM
CUJS16-30D
CUJS16-30DM
CUJS20-5D
CUJS20-5DM
CUJS20-5S
CUJS20-5SM
CUJS20-10D
CUJS20-10DM
CUJS20-10S
CUJS20-10SM
CUJS20-15D
CUJS20-15DM
CUJS20-20D
CUJS20-20DM
CUJS20-25D
CUJS20-25DM
CUJS20-30D

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	Cylinder Operation Method	Cylinder (Tube) Inner Diameter (Ø)	Stroke (mm)	Operating Temperature (℃)	Operating Pressure (MPa)	Auto Switch	Lead Wire Length (m)	Number of Switches	Rod Tip Shape	Lock unit magnet	Mount Type
36.90 €	1	4 Days	[Double Acting] Double Acting	20	20	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
36.11 €	1	4 Days	[Double Acting] Double Acting	20	25	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
36.90 €	1	4 Days	[Double Acting] Double Acting	20	25	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
36.11 €	1	22 Days	[Double Acting] Double Acting	20	30	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
36.90 €	1	4 Days	[Double Acting] Double Acting	20	30	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
36.90 €	1	4 Days	[Double Acting] Double Acting	20	35	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
37.69 €	1	4 Days	[Double Acting] Double Acting	20	35	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
36.90 €	1	4 Days	[Double Acting] Double Acting	20	40	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
37.69 €	1	4 Days	[Double Acting] Double Acting	20	40	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
37.63 €	1	4 Days	[Double Acting] Double Acting	20	45	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
38.40 €	1	4 Days	[Double Acting] Double Acting	20	45	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
37.63 €	1	4 Days	[Double Acting] Double Acting	20	50	-10～70	-	None	-	-	Female rod end	Without magnet	Lateral mounting
38.40 €	1	4 Days	[Double Acting] Double Acting	20	50	-10～70	-	None	-	-	Male rod end	Without magnet	Lateral mounting
30.18 €	1	22 Days	[Double Acting] Double Acting	12	5	-10～70	0.07～0.7	None	-	-	Female rod end	Without magnet	Axial mounting
30.95 €	1	4 Days	[Double Acting] Double Acting	12	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
30.18 €	1	4 Days	[Double Acting] With Return Spring	12	5	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
30.95 €	1	4 Days	[Double Acting] With Return Spring	12	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
30.18 €	1	4 Days	[Double Acting] Double Acting	12	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
30.95 €	1	4 Days	[Double Acting] Double Acting	12	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
30.18 €	1	16 Days	[Double Acting] With Return Spring	12	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
30.95 €	1	4 Days	[Double Acting] With Return Spring	12	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
30.18 €	1	4 Days	[Double Acting] Double Acting	12	15	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
30.95 €	1	4 Days	[Double Acting] Double Acting	12	15	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
31.68 €	1	4 Days	[Double Acting] Double Acting	12	20	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
32.47 €	1	4 Days	[Double Acting] Double Acting	12	20	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
31.68 €	1	4 Days	[Double Acting] Double Acting	12	25	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
32.47 €	1	4 Days	[Double Acting] Double Acting	12	25	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
31.68 €	1	4 Days	[Double Acting] Double Acting	12	30	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
32.47 €	1	4 Days	[Double Acting] Double Acting	12	30	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
32.39 €	1	4 Days	[Double Acting] Double Acting	16	5	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
33.18 €	1	4 Days	[Double Acting] Double Acting	16	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
32.39 €	1	4 Days	[Double Acting] With Return Spring	16	5	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
33.18 €	1	26 Days	[Double Acting] With Return Spring	16	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
32.39 €	1	4 Days	[Double Acting] Double Acting	16	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
33.18 €	1	4 Days	[Double Acting] Double Acting	16	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
32.39 €	1	22 Days	[Double Acting] With Return Spring	16	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
33.18 €	1	26 Days	[Double Acting] With Return Spring	16	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
32.39 €	1	4 Days	[Double Acting] Double Acting	16	15	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
33.18 €	1	22 Days	[Double Acting] Double Acting	16	15	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
33.90 €	1	4 Days	[Double Acting] Double Acting	16	20	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
34.68 €	1	4 Days	[Double Acting] Double Acting	16	20	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
33.90 €	1	4 Days	[Double Acting] Double Acting	16	25	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
34.68 €	1	4 Days	[Double Acting] Double Acting	16	25	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
33.90 €	1	4 Days	[Double Acting] Double Acting	16	30	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
34.68 €	1	4 Days	[Double Acting] Double Acting	16	30	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
34.61 €	1	4 Days	[Double Acting] Double Acting	20	5	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
35.40 €	1	4 Days	[Double Acting] Double Acting	20	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
34.61 €	1	4 Days	[Double Acting] With Return Spring	20	5	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
35.40 €	1	26 Days	[Double Acting] With Return Spring	20	5	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
34.61 €	1	4 Days	[Double Acting] Double Acting	20	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
35.40 €	1	4 Days	[Double Acting] Double Acting	20	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
34.61 €	1	4 Days	[Double Acting] With Return Spring	20	10	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
35.40 €	1	4 Days	[Double Acting] With Return Spring	20	10	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
34.61 €	1	4 Days	[Double Acting] Double Acting	20	15	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
35.40 €	1	4 Days	[Double Acting] Double Acting	20	15	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
36.11 €	1	4 Days	[Double Acting] Double Acting	20	20	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
36.90 €	1	22 Days	[Double Acting] Double Acting	20	20	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
36.11 €	1	4 Days	[Double Acting] Double Acting	20	25	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
36.90 €	1	4 Days	[Double Acting] Double Acting	20	25	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
36.11 €	1	22 Days	[Double Acting] Double Acting	20	30	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting

Basic information

Rod Operation Method	Single Rods	Main Body Shape	Plate Cylinder	Additional Function	Standard
Environment, Applications	Standard	End Locking	NA	Valves	NA
Cushion	Rubber cushion	Custom-made Specifications	None

Configure

309Suggestion of an applicable part number.

View Part Numbers

Some specification is not specified yet.

The part number is completed.

Basic Attributes

Cylinder Operation Method
- Double Acting
  - Double Acting
  - With Return Spring
- Single Acting (Extruded)
Clear
Cylinder (Tube) Inner Diameter(Ø)
12

16

20
Clear
Stroke(mm)
5

10

15

20

25

30

35

40

45

50
Clear
Auto Switch
F8B

F8N

F8P

M9B

M9N

None
Clear
Lead Wire Length(m)
- 0.5
- 1
- 3
- 5
Clear
Number of Switches
1 pc.

2 pcs.
Clear
Rod Tip Shape
- Female rod end
- Male rod end
Clear
Lock unit magnet
- Built-in magnet
- Without magnet
Clear
Mount Type
- Axial mounting
- Lateral mounting
Clear
Type
- CDUJB
- CDUJS
- CUJB
- CUJS
Clear
Filter by CAD data type
- 2D
- 3D
Clear

Filter by standard shipping days

All

4 Days or Less

7 Days or Less

16 Days or Less

22 Days or Less

26 Days or Less
Reset

Optional Attributes

Product images may be representative images.
The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .