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Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series (CDG3BN20-40G)

Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series CDG3BN20-40G

SMC

SMC

A standard type short double action, single rod cylinder.
[Features]
· An air cylinder with an overall length reduced by up to 51 mm and weight reduced by up to 24% (compared to CG1).
· Female rod end available as standard.
*See the SMC catalog for specification details.
*Product pictures are representative images. CAD data is not supported for some model numbers.

(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.​
  • CAD data is not supported for some model numbers.

PDF

Part Number

Configured Part Number is shown.

CDG3BN20-40G

Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series Specifications

Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series external appearance

Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series external appearance

JIS symbol (rubber bumper)

JIS symbol (rubber bumper)

Specifications

Tube Inner Diameter (mm)20253240506380100
ActionDouble acting, single rod
LubricationNot required (non-lubricated)
FluidAir
Proof Pressure1.0 MPa
Maximum operating pressure0.7 MPa
Minimum operating pressure0.05 MPa
Ambient and Fluid TemperatureWithout auto switch: -10°C to 70°C (No freezing)
With auto switch: -10°C to 60°C (No freezing)
Piston Speed50 to 1,000 mm/s30 to 700 mm/s
Stroke Length Tolerance0 to +1.4 mm
CushioningRubber cushion
Mount Support TypeBasic type, foot type, rod-end flange type,
head-end flange type, clevis type
Allowable Kinetic
Energy		Rod end male thread0.2 J0.29 J0.46 J0.84 J1.4 J2.38 J4.13 J6.93 J
Rod end female thread0.11 J0.18 J0.29 J0.52 J0.91 J1.54 J2.71 J4.54 J

*Only use the cylinder within the allowable kinetic energy range. See the SMC catalog for details.

Stroke Table

Tube Inner Diameter (mm)Standard Stroke (mm)*
2025, 50, 75, 100, 125, 150, 200
2525, 50, 75, 100, 125, 150, 200, 250, 300
32
40
50
63
80
100

*Contact the SMC support center regarding intermediate strokes of 1‑mm increments. (Spacers are not used.)

Theoretical Output Table

 

(Unit: N)

 

Tube Internal Diameter
D (mm)		Rod Diameter
d (mm)		Operating DirectionPiston Area
(mm2)		Operating Pressure (MPa)
0.20.30.40.50.60.7
208OUT31462.894.2125.6157188.4219.8
IN26452.879.2105.6132158.4184.8
2510OUT49198.2147.3196.4245.5294.6343.7
IN41282.4123.6164.8206247.2288.4
3212OUT804160.8241.2321.6402482.4562.8
IN691138.2207.3276.4345.5414.6483.7
4014OUT1,257251.4377.1502.8628.5754.2879.9
IN1,103220.6330.9441.2551.5661.8772.1
5018OUT1,964392.8589.2785.69821,178.41,374.8
IN1,709341.8512.7683.6854.51,025.41,196.3
6318OUT3,117623.4935.11,246.81,558.51,870.22,181.9
IN2,863572.6858.91,145.21,431.51,717.82,004.1
8022OUT5,0271,005.41,508.12,010.82,513.53,016.23,518.9
IN4,646929.21,393.81,858.42,3232,787.63,252.2
10026OUT7,8541,570.82,356.23,141.63,9274,712.45,497.8
IN7,3231,464.62,196.92,929.23,661.54,393.85,126.1

*Theoretical output (N) = Pressure (MPa) × Piston area (mm2).

Weight Table

 

(Unit: kg)

 

Tube Inner Diameter (mm)20253240506380100
Basic weightBasic type0.090.140.200.320.660.921.752.74
Rod-End Long Type (G)0.100.150.210.340.700.971.842.85
Rod End Female Thread Type (F)0.080.120.190.290.600.851.612.53
Additional Bracket WeightFoot type0.110.130.160.220.480.720.961.75
Flange type0.080.100.140.200.340.500.711.35
Clevis Type0.050.080.150.230.400.680.711.28
Pivot bracket0.080.090.170.250.440.800.981.75
Single Knuckle Joint0.050.090.090.100.220.220.390.57
Double knuckle joint (with pin)0.050.090.090.130.260.260.641.31
Additional weight per 50 strokes0.050.070.090.130.190.230.310.43
Additional Switch Magnet Weight0.010.010.010.010.010.020.020.04

Calculation Example) CDG3FN20-100 (built-in magnet, flange type, ø20 mm, 100 stroke)

  • Basic weight: 0.09 kg (basic type, ø20 mm)
  • Additional bracket weight: 0.08 kg (flange type)
  • Additional stroke weight: 0.05 kg / 50 mm
  • Air cylinder stroke: 100 mm
  • Additional switch magnet weight: 0.01 kg

0.09 + 0.08 + 0.05 × (100/50) + 0.01 = 0.28 kg

Mounting Procedure

Mounting procedure for clevis: (ø20 to 63 mm)

Mounting procedure for clevis: (ø20 to 63 mm)

Mounting procedure for clevis: (ø80 to 100 mm)

Mounting procedure for clevis: (ø80 to 100 mm)

Mounting procedure for rod end nut

Mounting procedure for rod end nut

  1. *1: Tighten the clevis bracket mounting bolts to the proper tightening torques detailed below.
    　　ø20 mm: 1.5 N·m, ø25 to 32 mm: 2.9 N·m, ø40 mm: 4.9 N·m
    　　ø50 mm: 11.8 N·m, ø63 to 80 mm: 24.5 N·m, ø100 mm: 42.2 N·m
  2. *2: Mount the flange type and foot type so that the distance 't' (clearance) of the rod end nut is at least 1 mm.
  3. *3: The direction of the rod end nut (for male thread) when mounting should be with the hexagonal part at the rod end. Apply the wrench to the hexagonal part.

Diagram

With rubber bumper diagram

With rubber bumper diagram

NumberNameMaterialNotes
1Rod coverAluminum alloyHard anodized aluminum
2Tube CoverAluminum alloyHard anodized aluminum
3PistonAluminum alloyChromate
4Piston rodCarbon steel*Hard chrome plated*
5BushingResin/Copper alloy (Multiple layers)-
6Bumper AResin-
7Damper BResin-
8Wear RingResin-
9Rod End NutCarbon steelNickel plated
10Rod sealNBR-
11Piston SealNBR-
12Tube GasketNBR-

*For cylinders with auto switches, a magnet is attached to the piston.
*The material for ø20 mm and ø25 mm cylinders with auto switches is stainless steel.

Dimensions

 

(Units: mm)

 

Basic type / CG3BN tube inner diameter, stroke, with rubber bumper dimensional drawing

Basic type / CG3BN tube inner diameter, stroke, with rubber bumper dimensional drawing

 
Rod-end female thread / Long rod-end male thread dimensional drawing

Rod-end female thread / Long rod-end male thread dimensional drawing

 
Foot type / CG3LN tube inner diameter, stroke, with rubber bumper dimensional drawing

Foot type / CG3LN tube inner diameter, stroke, with rubber bumper dimensional drawing

  • *See the manufacturer's catalog for dimensional drawings and values other than those provided above.
30
45
60
  1. 1
Part Number
CDG3BN20-40G
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipCylinder (Tube) Inner Diameter
(Ø) 		Stroke
(mm) 		Specifications Auto Switches Lead Wire The number of the switches Type of Mount Support Rod Tip Shape

-

1 Piece(s) Quote 2040Built-in magnetWithout switch--Basic typeMale thread, long

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  1. 1
 

Basic Information

Cylinder Operation Method Double Acting Rod Operation Method Single Rods Main Body Shape Standard
Additional Function Standard Environment, Applications Standard Cushion Rubber cushion
Operating Pressure(MPa) 0.05 to 0.7

Please check the type/dimensions/specifications of the part CDG3BN20-40G in the Air Cylinder, Short Type, Standard, Double Acting, Single Rod CG3 Series series.

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Specification/Dimensions

  • Lead Wire

    • 0.5
    • 0.5 (M8 3-pin plug connector)
    • 0.5 (M8 4-pin plug connector)
    • 0.5 (M12 4-pin A-cord [normal-key] plug connector)
    • 1
    • 1 (M8 4-pin plug connector)
    • 1 (M12 4-pin A-cord [normal-key] plug connector)
    • 3
    • 5

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  • The number of the switches

    • 1
    • 2
    • 3
    • 4
    • 5
    • 8

    Clear

  • type

    • CDG3
    • CG3

    Clear

  • Cylinder (Tube) Inner Diameter(Ø)

    • 20
    • 25
    • 32
    • 40
    • 50
    • 63
    • 80
    • 100

    Clear

  • Stroke(mm)

    • 10
    • 13
    • 14
    • 15
    • 20
    • 24
    • 25
    • 30
    • 32
    • 35
    • 36
    • 38
    • 39
    • 40
    • 45
    • 48
    • 49
    • 50
    • 52
    • 53
    • 54
    • 55
    • 59
    • 60
    • 65
    • 68
    • 70
    • 72
    • 73
    • 74
    • 75
    • 77
    • 80
    • 81
    • 83
    • 85
    • 90
    • 95
    • 97
    • 100
    • 101
    • 102
    • 105
    • 107
    • 110
    • 111
    • 112
    • 115
    • 117
    • 120
    • 122
    • 125
    • 130
    • 131
    • 135
    • 140
    • 145
    • 147
    • 150
    • 152
    • 153
    • 154
    • 155
    • 160
    • 165
    • 166
    • 169
    • 170
    • 173
    • 174
    • 175
    • 177
    • 180
    • 185
    • 190
    • 200
    • 203
    • 205
    • 210
    • 215
    • 220
    • 225
    • 230
    • 235
    • 240
    • 245
    • 250
    • 252
    • 260
    • 265
    • 266
    • 270
    • 275
    • 277
    • 280
    • 285
    • 300

    Clear

  • Specifications

    • Built-in magnet
    • Without magnet

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  • Auto Switches

    • G5BA
    • G5P
    • G5PW
    • H7B
    • H7BA
    • H7BW
    • H7C
    • M9B
    • M9B (with mounting bracket)
    • M9BA (with mounting bracket)
    • M9BAV (with mounting bracket)
    • M9BV
    • M9BV (with mounting bracket)
    • M9BW
    • M9BW (with mounting bracket)
    • M9BWV
    • M9BWV (with mounting bracket)
    • M9N
    • M9N (with mounting bracket)
    • M9NA (with mounting bracket)
    • M9NV
    • M9NV (with mounting bracket)
    • M9NW
    • M9NW (with mounting bracket)
    • M9NWV (with mounting bracket)
    • M9P
    • M9P (with mounting bracket)
    • M9PA (with mounting bracket)
    • M9PAV (with mounting bracket)
    • M9PW
    • M9PW (with mounting bracket)
    • B54
    • B59W
    • G59
    • G59W
    • K59
    • K59W
    • B64
    • C73
    • C73C
    • C76
    • C80
    • C80C
    • A90
    • A90 (with mounting bracket)
    • A90V (with mounting bracket)
    • A93
    • A93 (with mounting bracket)
    • A93V (with mounting bracket)
    • A96
    • A96 (with mounting bracket)
    • Without switch

    Clear

  • Type of Mount Support

    • Basic type
    • Clevis shape
    • Foot
    • Head-end flange
    • Rod-end flange type

    Clear

  • Rod Tip Shape

    • Female Thread
    • Male thread
    • Male thread, long

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  • CAD

    • 2D
    • 3D

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Days to Ship

    • All
    • 32 Day(s) or Less

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Specify Alterations

Similar Part Numbers

Part Number
CDG3BN100-100-K59
CDG3BN100-100F
CDG3BN100-100F-G5BAL
CDG3BN20-45
CDG3BN20-45-M9B-C
CDG3BN20-45F
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipCylinder (Tube) Inner Diameter
(Ø) 		Stroke
(mm) 		Specifications Auto Switches Lead Wire The number of the switches Type of Mount Support Rod Tip Shape

-

1 Piece(s) Quote 100100Built-in magnetK590.52Basic typeMale thread

-

1 Piece(s) Quote 100100Built-in magnetWithout switch--Basic typeFemale Thread

-

1 Piece(s) Quote 100100Built-in magnetG5BA32Basic typeFemale Thread

-

1 Piece(s) Quote 2045Built-in magnetWithout switch--Basic typeMale thread

-

1 Piece(s) Quote 2045Built-in magnetM9B (with mounting bracket)0.52Basic typeMale thread

-

1 Piece(s) Quote 2045Built-in magnetWithout switch--Basic typeFemale Thread

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