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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

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

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

Part Number
CDUJB12-5[D,​S]
CDUJB12-5[D,​S]M
CDUJB12-10[D,​S]
CDUJB12-10[D,​S]M
CDUJB12-15D
CDUJB12-15DM
CDUJB12-20D
CDUJB12-20DM
CDUJB12-25D
CDUJB12-25DM
CDUJB12-30D
CDUJB12-30DM
CDUJB12-35D
CDUJB12-35DM
CDUJB12-40D
CDUJB12-40DM
CDUJB12-45D
CDUJB12-45DM
CDUJB12-50D
CDUJB12-50DM
CDUJB16-5[D,​S]
CDUJB16-5[D,​S]M
CDUJB16-10[D,​S]
CDUJB16-10[D,​S]M
CDUJB16-15D
CDUJB16-15DM
CDUJB16-20D
CDUJB16-20DM
CDUJB16-25D
CDUJB16-25DM
CDUJB16-30D
CDUJB16-30DM
CDUJB16-35D
CDUJB16-35DM
CDUJB16-40D
CDUJB16-40DM
CDUJB16-45D
CDUJB16-45DM
CDUJB16-50D
CDUJB16-50DM
CDUJB20-5[D,​S]
CDUJB20-5[D,​S]M
CDUJB20-10[D,​S]
CDUJB20-10[D,​S]M
CDUJB20-15D
CDUJB20-15DM
CDUJB20-20D
CDUJB20-20DM
CDUJB20-25D
CDUJB20-25DM
CDUJB20-30D
CDUJB20-30DM
CDUJB20-35D
CDUJB20-35DM
CDUJB20-40D
CDUJB20-40DM
CDUJB20-45D
CDUJB20-45DM
CDUJB20-50D
CDUJB20-50DM
CDUJS12-5[D,​S]
CDUJS12-5[D,​S]M
CDUJS12-10[D,​S]
CDUJS12-10[D,​S]M
CDUJS12-15D
CDUJS12-15DM
CDUJS12-20D
CDUJS12-20DM
CDUJS12-25D
CDUJS12-25DM
CDUJS12-30D
CDUJS12-30DM
CDUJS12-35D
CDUJS12-35DM
CDUJS12-40D
CDUJS12-40DM
CDUJS12-45D
CDUJS12-45DM
CDUJS12-50D
CDUJS12-50DM
CDUJS16-5[D,​S]
CDUJS16-5[D,​S]M
CDUJS16-10[D,​S]
CDUJS16-10[D,​S]M
CDUJS16-15D
CDUJS16-15DM
CDUJS16-20D
CDUJS16-20DM
CDUJS16-25D
CDUJS16-25DM
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 125-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 125-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1210-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1210-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1215-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1215-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1220-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1220-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1225-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1225-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1230-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1230-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1235-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1235-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1240-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1240-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1245-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1245-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1250-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1250-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 165-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 165-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1610-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1610-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1615-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1615-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1620-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1620-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1625-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1625-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1630-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1630-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1635-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1635-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1640-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1640-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1645-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1645-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1650-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 1650-10~60Built-in magnetM3x0.5Lateral mounting

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1 Piece(s) Quote 205-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 205-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2010-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2010-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2015-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2015-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) 22 Day(s) 2020-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) 22 Day(s) 2020-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2025-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2025-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2030-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2030-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2035-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2035-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2040-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2040-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2045-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2045-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2050-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 2050-10~60Built-in magnetM5 × 0.8Lateral mounting

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1 Piece(s) Quote 125-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 125-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1210-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1210-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1215-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1215-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1220-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1220-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1225-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1225-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1230-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1230-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1235-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1235-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1240-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1240-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1245-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1245-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1250-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1250-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 165-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 165-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1610-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1610-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1615-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1615-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1620-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1620-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1625-10~60Built-in magnetM3x0.5Axial mounting

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1 Piece(s) Quote 1625-10~60Built-in magnetM3x0.5Axial 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

Tech Support