Mini Free Mount Cylinder, ø12, ø16, ø20, CUJ Series (CUJS20-40D)

SMC

Product Details:

Manufacturer part number: CUJS20-40D

Brand: SMC

Price: 36.90 €

Delivery time: 4 Days

Technical Data:

Cylinder Operation Method: [Double Acting] Double Acting

Cylinder (Tube) Inner Diameter: 20 Ø

Stroke: 40 mm

Operating Temperature: -10～70 ℃

Operating Pressure: - MPa

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CUJS20-40D

Product specification
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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

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

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
CUJS20-40D

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	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	40	-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

This page is Mini Free Mount Cylinder, ø12, ø16, ø20, CUJ Series, part number CUJS20-40D.
You can find the detail information about specifications and dimensions on part number CUJS20-40D.

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Basic Attributes

Lead Wire Length(m)
- 0.5
- 1
- 3
- 5
Clear
Number of Switches
1 pc.

2 pcs.
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Type
- CDUJB
- CDUJS
- CUJB
- CUJS
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Cylinder Operation Method
- Double Acting
  - Double Acting
  - With Return Spring
- Single Acting (Extruded)
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Cylinder (Tube) Inner Diameter(Ø)
12

16

20
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Stroke(mm)
5

10

15

20

25

30

35

40

45

50
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Auto Switch
F8B

F8N

F8P

M9B

M9N

None
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Rod Tip Shape
- Female rod end
- Male rod end
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Lock unit magnet
- Built-in magnet
- Without magnet
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Mount Type
- Axial mounting
- Lateral mounting
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Variation of this product

Part Number
CDUJB12-10DM
CDUJB12-10DM-F8B
CDUJB12-10DM-F8N
CUJS20-40DM
CUJS20-45D
CUJS20-45DM

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
36.24 €	1	4 Days	[Double Acting] Double Acting	12	10	-10～70	0.07～0.7	None	-	-	Male rod end	Built-in magnet	Lateral mounting
132.53 €	1	26 Days	[Double Acting] Double Acting	12	10	-10～60	0.07～0.7	F8B	0.5	2 pcs.	Male rod end	Built-in magnet	Lateral mounting
132.56 €	1	26 Days	[Double Acting] Double Acting	12	10	-10～60	0.07～0.7	F8N	0.5	2 pcs.	Male rod end	Built-in magnet	Lateral mounting
37.69 €	1	4 Days	[Double Acting] Double Acting	20	40	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting
37.63 €	1	26 Days	[Double Acting] Double Acting	20	45	-10～70	-	None	-	-	Female rod end	Without magnet	Axial mounting
38.40 €	1	26 Days	[Double Acting] Double Acting	20	45	-10～70	-	None	-	-	Male rod end	Without magnet	Axial mounting