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CUJ Series Mini Free Mount Cylinder, Bore Size 12 mm / 16 mm / 20 mm (Part Numbers)

CUJ Series Mini Free Mount Cylinder, Bore Size 12 mm / 16 mm / 20 mm

SMC

SMC

Mini free mount series of compact air cylinders.
[Features]
· Space-saving cylinder that reduces the overall length by up to 64% and reduces the volume by up to 70% compared with the same manufacturer's CU Series cylinders.
· With magnet: Shortened by up to approx. 20%, volume reduced by up to approx. 45%. (Compared with the same manufacturer's double acting type CQS cylinder with magnet.)
· Without magnet: Shortened by up to approx. 64%, volume reduced by up to approx. 70%. (Compared with the same manufacturer's double acting type CU cylinder without magnet.)
· With auto switch.

(i)Caution

  • ■ SMC Product Line
    Webpages for products currently without individual pages on this site will be released on an ad-hoc basis.
  • Refer to the manufacturer's catalog for specification and material details.
  • Product images may be representative images. Refer to the manufacturer's catalog for shape details.​

PDF

Japanese Only

Part Number

Configured Part Number is shown.

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

Dimensions (Without Magnet)

Tube inner diameter A (a) B (b) C (c)
12 17 (−) 26.5 (−) 15.5 (−)
16 21 (20) 29.5 (32) 16.5 (30)
20 25 (26) 36 (40) 19.5 (36)

 

(Units: mm)

 

(): Dimensions of the same manufacturer's CU cylinder.

Dimensions: CUJ (A × B × C + stroke) CU (a × b × c + stroke)

Dimensions: CUJ (A × B × C + stroke) CU (a × b × c + stroke)

Specifications

With counterbore for mounting

With counterbore for mounting
There is no protrusion for a mounting bolt.

Easy seal replacement: Seals can be replaced easily by just removing the retaining ring.

Easy seal replacement
Seals can be replaced easily by just removing the retaining ring.

Bumper equipment as standard

Bumper equipment as standard

Bore size mm 12 16 20
Action Double acting / Single acting, spring return
Fluid Air
Proof Pressure 1.05 MPa
Minimum operating pressure Double-acting type 0.07 MPa 0.05 MPa
Single acting, spring return 0.25 MPa 0.18 MPa
Maximum operating pressure 0.7 MPa
Ambient and Working Fluid Temperature Without auto switch: -10°C to 70°C (no freezing)
With auto switch: -10°C to 60°C (no freezing)
Cushioning Rubber cushion
Lubrication Not required
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)

Standard Stroke

JIS symbol: Double acting, single rod, rubber bumper

JIS symbol
Double acting, single rod, rubber bumper

Single acting, spring return, rubber bumper

Single acting, spring return, rubber bumper

Tube Inner Diameter (mm) Action Standard Stroke (mm)
12 Double-acting type 5, 10, 15, 20, 25, 30, 35, 40, 45, 50
16
20 5, 10, 15, 20, 25, 30, 35, 40, 45, 50
12 Single acting, spring return 5, 10
16
20

Spring Reaction Force: Single Acting, Spring Return

Spring in pre-loaded condition: When the spring is set in the cylinder

Spring in pre-loaded condition: When the spring is set in the cylinder

Spring in loaded condition: When the spring is contracted by applying air

Spring in loaded condition: When the spring is contracted by applying air

Tube inner diameter
(mm) 		Spring condition Stroke (mm)
5 10
12 Pre-loaded 6 3.5
Loaded 9.5 9.5
16 Pre-loaded 7.5 4.5
Loaded 11 11
20 Pre-loaded 10.5 5.5
Loaded 16.5 16.5

 

(Unit: N)

 

*Moving the load with the thrust (spring response) on the spring return side will cause a poor stroke.

Weight Table

 

(Unit: g)

 

Tube inner diameter
(mm) 		Standard Stroke (mm) Additional weight
5 10 15 20 25 30 35 40 45 50 Built-in magnet Rod end male thread
CUJ□12 21 26 31 35 40 45 50 55 60 65 6 4
CUJ□16 32 39 46 53 60 67 74 81 88 95 9 8
CUJ□20 52 62 72 82 92 102 112 122 132 142 12 13

Double-acting type

 

 

(Unit: g)

 

Tube inner diameter
(mm) 		Standard Stroke (mm) Additional weight
5 10 Built-in magnet Rod end male thread
CUJ□12 23 28 6 4
CUJ□16 34 41 9 8
CUJ□20 53 63 11 13

Single acting, spring return

30
60
90
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Part Number
CUJS12-5[D,​S]
CUJS12-5[D,​S]M
CUJS12-10[D,​S]
CUJS12-10[D,​S]M
CUJS12-15D
CUJS12-15DM
CUJS12-20D
CUJS12-20DM
CUJS12-25D
CUJS12-25DM
CUJS12-30D
CUJS12-30DM
CUJS12-35D
CUJS12-35DM
CUJS12-40D
CUJS12-40DM
CUJS12-45D
CUJS12-45DM
CUJS12-50D
CUJS12-50DM
CUJS16-5[D,​S]
CUJS16-5[D,​S]M
CUJS16-10[D,​S]
CUJS16-10[D,​S]M
CUJS16-15D
CUJS16-15DM
CUJS16-20D
CUJS16-20DM
CUJS16-25D
CUJS16-25DM
CUJS16-30D
CUJS16-30DM
CUJS16-35D
CUJS16-35DM
CUJS16-40D
CUJS16-40DM
CUJS16-45D
CUJS16-45DM
CUJS16-50D
CUJS16-50DM
CUJS20-5[D,​S]
CUJS20-5[D,​S]M
CUJS20-10[D,​S]
CUJS20-10[D,​S]M
CUJS20-15D
CUJS20-15DM
CUJS20-20D
CUJS20-20DM
CUJS20-25D
CUJS20-25DM
CUJS20-30D
CUJS20-30DM
CUJS20-35D
CUJS20-35DM
CUJS20-40D
CUJS20-40DM
CUJS20-45D
CUJS20-45DM
CUJS20-50D
CUJS20-50DM
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipCylinder (Tube) Inner Diameter
(Ø) 		Stroke
(mm) 		Operating Temperature
(°C) 		Specifications Port thread type Type of Mount Support

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1 Piece(s) Quote 125-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 125-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1210-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1210-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1215-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1215-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1220-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1220-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1225-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1225-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1230-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1230-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1235-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1235-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1240-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1240-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1245-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1245-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1250-10～70Without built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1250-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 165-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 165-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1610-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1610-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1615-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1615-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1620-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1620-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1625-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1625-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1630-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1630-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1635-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1635-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1640-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1640-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1645-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1645-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1650-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 1650-10～70Without built-in magnetM3x0.5Axial mounting

-

1 Piece(s) Quote 205-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 205-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2010-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2010-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2015-10～70Without built-in magnetM5 × 0.8Axial mounting

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1 Piece(s) Quote 2015-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2020-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2020-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2025-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2025-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2030-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2030-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2035-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2035-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2040-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2040-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2045-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2045-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2050-10～70Without built-in magnetM5 × 0.8Axial mounting

-

1 Piece(s) Quote 2050-10～70Without built-in magnetM5 × 0.8Axial mounting

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Basic Information

Rod Operation Method Single Rods Main Body Shape Plate Cylinder Additional Function Standard
Environment, Applications Standard Cushion Rubber cushion

Configure

Clear All

240 Part Numbers

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Configure Remaining Specifications
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Specification/Dimensions

  • Cylinder (Tube) Inner Diameter(Ø)

    • 12
    • 16
    • 20

    Clear

  • Stroke(mm)

    • 5
    • 10
    • 15
    • 20
    • 25
    • 30
    • 35
    • 40
    • 45
    • 50

    Clear

  • Specifications

    • Built-in magnet
    • Without built-in magnet

    Clear

  • Port thread type

    • M3x0.5
    • M5 × 0.8

    Clear

  • Type of Mount Support

    • Axial mounting
    • Lateral mounting

    Clear

  • type

    • CDUJB
    • CDUJS
    • CUJB
    • CUJS

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 22 Day(s) or Less

    Clear

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