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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.
Part Number
Configured Part Number is shown.

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

JIS symbol (rubber bumper)
| Tube Inner Diameter (mm) | 20 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | |
|---|---|---|---|---|---|---|---|---|---|
| Action | Double acting, single rod | ||||||||
| Lubrication | Not required (non-lubricated) | ||||||||
| Fluid | Air | ||||||||
| Proof Pressure | 1.0 MPa | ||||||||
| Maximum operating pressure | 0.7 MPa | ||||||||
| Minimum operating pressure | 0.05 MPa | ||||||||
| Ambient and Fluid Temperature | Without auto switch: -10°C to 70°C (No freezing) | ||||||||
| With auto switch: -10°C to 60°C (No freezing) | |||||||||
| Piston Speed | 50 to 1,000 mm/s | 30 to 700 mm/s | |||||||
| Stroke Length Tolerance | 0 to +1.4 mm | ||||||||
| Cushioning | Rubber cushion | ||||||||
| Mount Support Type | Basic type, foot type, rod-end flange type, head-end flange type, clevis type | ||||||||
| Allowable Kinetic Energy | Rod end male thread | 0.2 J | 0.29 J | 0.46 J | 0.84 J | 1.4 J | 2.38 J | 4.13 J | 6.93 J |
| Rod end female thread | 0.11 J | 0.18 J | 0.29 J | 0.52 J | 0.91 J | 1.54 J | 2.71 J | 4.54 J | |
*Only use the cylinder within the allowable kinetic energy range. See the SMC catalog for details.
| Tube Inner Diameter (mm) | Standard Stroke (mm)* |
|---|---|
| 20 | 25, 50, 75, 100, 125, 150, 200 |
| 25 | 25, 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.)
(Unit: N)
| Tube Internal Diameter D (mm) | Rod Diameter d (mm) | Operating Direction | Piston Area (mm2) | Operating Pressure (MPa) | |||||
|---|---|---|---|---|---|---|---|---|---|
| 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | ||||
| 20 | 8 | OUT | 314 | 62.8 | 94.2 | 125.6 | 157 | 188.4 | 219.8 |
| IN | 264 | 52.8 | 79.2 | 105.6 | 132 | 158.4 | 184.8 | ||
| 25 | 10 | OUT | 491 | 98.2 | 147.3 | 196.4 | 245.5 | 294.6 | 343.7 |
| IN | 412 | 82.4 | 123.6 | 164.8 | 206 | 247.2 | 288.4 | ||
| 32 | 12 | OUT | 804 | 160.8 | 241.2 | 321.6 | 402 | 482.4 | 562.8 |
| IN | 691 | 138.2 | 207.3 | 276.4 | 345.5 | 414.6 | 483.7 | ||
| 40 | 14 | OUT | 1,257 | 251.4 | 377.1 | 502.8 | 628.5 | 754.2 | 879.9 |
| IN | 1,103 | 220.6 | 330.9 | 441.2 | 551.5 | 661.8 | 772.1 | ||
| 50 | 18 | OUT | 1,964 | 392.8 | 589.2 | 785.6 | 982 | 1,178.4 | 1,374.8 |
| IN | 1,709 | 341.8 | 512.7 | 683.6 | 854.5 | 1,025.4 | 1,196.3 | ||
| 63 | 18 | OUT | 3,117 | 623.4 | 935.1 | 1,246.8 | 1,558.5 | 1,870.2 | 2,181.9 |
| IN | 2,863 | 572.6 | 858.9 | 1,145.2 | 1,431.5 | 1,717.8 | 2,004.1 | ||
| 80 | 22 | OUT | 5,027 | 1,005.4 | 1,508.1 | 2,010.8 | 2,513.5 | 3,016.2 | 3,518.9 |
| IN | 4,646 | 929.2 | 1,393.8 | 1,858.4 | 2,323 | 2,787.6 | 3,252.2 | ||
| 100 | 26 | OUT | 7,854 | 1,570.8 | 2,356.2 | 3,141.6 | 3,927 | 4,712.4 | 5,497.8 |
| IN | 7,323 | 1,464.6 | 2,196.9 | 2,929.2 | 3,661.5 | 4,393.8 | 5,126.1 | ||
*Theoretical output (N) = Pressure (MPa) × Piston area (mm2).
(Unit: kg)
| Tube Inner Diameter (mm) | 20 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | |
|---|---|---|---|---|---|---|---|---|---|
| Basic weight | Basic type | 0.09 | 0.14 | 0.20 | 0.32 | 0.66 | 0.92 | 1.75 | 2.74 |
| Rod-End Long Type (G) | 0.10 | 0.15 | 0.21 | 0.34 | 0.70 | 0.97 | 1.84 | 2.85 | |
| Rod End Female Thread Type (F) | 0.08 | 0.12 | 0.19 | 0.29 | 0.60 | 0.85 | 1.61 | 2.53 | |
| Additional Bracket Weight | Foot type | 0.11 | 0.13 | 0.16 | 0.22 | 0.48 | 0.72 | 0.96 | 1.75 |
| Flange type | 0.08 | 0.10 | 0.14 | 0.20 | 0.34 | 0.50 | 0.71 | 1.35 | |
| Clevis Type | 0.05 | 0.08 | 0.15 | 0.23 | 0.40 | 0.68 | 0.71 | 1.28 | |
| Pivot bracket | 0.08 | 0.09 | 0.17 | 0.25 | 0.44 | 0.80 | 0.98 | 1.75 | |
| Single Knuckle Joint | 0.05 | 0.09 | 0.09 | 0.10 | 0.22 | 0.22 | 0.39 | 0.57 | |
| Double knuckle joint (with pin) | 0.05 | 0.09 | 0.09 | 0.13 | 0.26 | 0.26 | 0.64 | 1.31 | |
| Additional weight per 50 strokes | 0.05 | 0.07 | 0.09 | 0.13 | 0.19 | 0.23 | 0.31 | 0.43 | |
| Additional Switch Magnet Weight | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 | 0.02 | 0.04 | |
Calculation Example) CDG3FN20-100 (built-in magnet, flange type, ø20 mm, 100 stroke)
0.09 + 0.08 + 0.05 × (100/50) + 0.01 = 0.28 kg

Mounting procedure for clevis: (ø20 to 63 mm)

Mounting procedure for clevis: (ø80 to 100 mm)

Mounting procedure for rod end nut

With rubber bumper diagram
| Number | Name | Material | Notes |
|---|---|---|---|
| 1 | Rod cover | Aluminum alloy | Hard anodized aluminum |
| 2 | Tube Cover | Aluminum alloy | Hard anodized aluminum |
| 3 | Piston | Aluminum alloy | Chromate |
| 4 | Piston rod | Carbon steel* | Hard chrome plated* |
| 5 | Bushing | Resin/Copper alloy (Multiple layers) | - |
| 6 | Bumper A | Resin | - |
| 7 | Damper B | Resin | - |
| 8 | Wear Ring | Resin | - |
| 9 | Rod End Nut | Carbon steel | Nickel plated |
| 10 | Rod seal | NBR | - |
| 11 | Piston Seal | NBR | - |
| 12 | Tube Gasket | NBR | - |
*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.
(Units: mm)

Basic type / CG3BN tube inner diameter, stroke, with rubber bumper 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
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Cylinder (Tube) Inner Diameter (Ø) | Stroke (mm) | Specifications | Auto Switches | Lead Wire | The number of the switches | Type of Mount Support | Rod Tip Shape | Connector type | Auto switch mounting bracket |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 405.38 | 1 Piece(s) | 27 Day(s) or more | 40 | 15 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 405.38 | 1 Piece(s) | 27 Day(s) or more | 40 | 20 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 423.84 | 1 Piece(s) | 27 Day(s) or more | 40 | 30 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 435.73 | 1 Piece(s) | 27 Day(s) or more | 40 | 32 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 423.84 | 1 Piece(s) | 27 Day(s) or more | 40 | 35 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 421.50 | 1 Piece(s) | 27 Day(s) or more | 40 | 38 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 423.84 | 1 Piece(s) | 27 Day(s) or more | 40 | 50 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 438.56 | 1 Piece(s) | 27 Day(s) or more | 40 | 52 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 476.60 | 1 Piece(s) | 27 Day(s) or more | 40 | 65 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 442.47 | 1 Piece(s) | 27 Day(s) or more | 40 | 70 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 492.31 | 1 Piece(s) | 27 Day(s) or more | 40 | 100 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 508.11 | 1 Piece(s) | 27 Day(s) or more | 40 | 120 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 497.96 | 1 Piece(s) | 27 Day(s) or more | 40 | 140 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 523.87 | 1 Piece(s) | 27 Day(s) or more | 40 | 150 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 555.43 | 1 Piece(s) | 27 Day(s) or more | 40 | 160 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 555.43 | 1 Piece(s) | 27 Day(s) or more | 40 | 160 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 535.11 | 1 Piece(s) | 27 Day(s) or more | 40 | 165 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 535.11 | 1 Piece(s) | 27 Day(s) or more | 40 | 180 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 555.43 | 1 Piece(s) | 27 Day(s) or more | 40 | 185 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 568.65 | 1 Piece(s) | 27 Day(s) or more | 40 | 203 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 572.14 | 1 Piece(s) | 27 Day(s) or more | 40 | 220 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 572.14 | 1 Piece(s) | 27 Day(s) or more | 40 | 250 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 600.16 | 1 Piece(s) | 27 Day(s) or more | 40 | 260 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 600.16 | 1 Piece(s) | 27 Day(s) or more | 40 | 260 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 618.50 | 1 Piece(s) | 27 Day(s) or more | 40 | 280 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 609.23 | 1 Piece(s) | 27 Day(s) or more | 40 | 280 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 609.23 | 1 Piece(s) | 27 Day(s) or more | 40 | 300 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 664.89 | 1 Piece(s) | 27 Day(s) or more | 50 | 68 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 664.89 | 1 Piece(s) | 27 Day(s) or more | 50 | 70 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 727.95 | 1 Piece(s) | 27 Day(s) or more | 50 | 90 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 758.63 | 1 Piece(s) | 27 Day(s) or more | 50 | 110 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 722.99 | 1 Piece(s) | 27 Day(s) or more | 50 | 120 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 752.48 | 1 Piece(s) | 27 Day(s) or more | 50 | 120 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 702.10 | 1 Piece(s) | 3 Day(s) | 50 | 125 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 722.99 | 1 Piece(s) | 27 Day(s) or more | 50 | 125 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 890.12 | 1 Piece(s) | 27 Day(s) or more | 50 | 210 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 776.21 | 1 Piece(s) | 27 Day(s) or more | 63 | 10 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 744.17 | 1 Piece(s) | 27 Day(s) or more | 63 | 15 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 788.81 | 1 Piece(s) | 27 Day(s) or more | 63 | 40 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 803.41 | 1 Piece(s) | 27 Day(s) or more | 63 | 45 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 802.49 | 1 Piece(s) | 27 Day(s) or more | 63 | 60 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 802.49 | 1 Piece(s) | 27 Day(s) or more | 63 | 75 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 858.56 | 1 Piece(s) | 27 Day(s) or more | 63 | 90 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 831.14 | 1 Piece(s) | 27 Day(s) or more | 63 | 90 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 913.80 | 1 Piece(s) | 27 Day(s) or more | 63 | 140 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 1,003.33 | 1 Piece(s) | 27 Day(s) or more | 63 | 155 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 968.95 | 1 Piece(s) | 27 Day(s) or more | 63 | 155 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 968.95 | 1 Piece(s) | 27 Day(s) or more | 63 | 190 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 807.30 | 1 Piece(s) | 27 Day(s) or more | 80 | 10 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 807.30 | 1 Piece(s) | 27 Day(s) or more | 80 | 15 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 841.79 | 1 Piece(s) | 27 Day(s) or more | 80 | 30 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 874.36 | 1 Piece(s) | 27 Day(s) or more | 80 | - | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 876.16 | 1 Piece(s) | 27 Day(s) or more | 80 | 74 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 876.16 | 1 Piece(s) | 27 Day(s) or more | 80 | 75 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 962.94 | 1 Piece(s) | 27 Day(s) or more | 80 | 80 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 937.44 | 1 Piece(s) | 27 Day(s) or more | 80 | 85 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 937.44 | 1 Piece(s) | 27 Day(s) or more | 80 | 100 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 944.96 | 1 Piece(s) | 27 Day(s) or more | 80 | 105 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,048.30 | 1 Piece(s) | 27 Day(s) or more | 80 | 180 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,117.10 | 1 Piece(s) | 27 Day(s) or more | 80 | 250 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,185.90 | 1 Piece(s) | 27 Day(s) or more | 80 | 275 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 942.75 | 1 Piece(s) | 27 Day(s) or more | 100 | 15 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,077.41 | 1 Piece(s) | 27 Day(s) or more | 100 | 100 | Without magnet | - | - | - | Basic type | Female Thread | - | - | ||
MYR 1,122.82 | 1 Piece(s) | 27 Day(s) or more | 100 | 115 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 1,122.82 | 1 Piece(s) | 27 Day(s) or more | 100 | 125 | Without magnet | - | - | - | Basic type | Male thread, long | - | - | ||
MYR 1,181.85 | 1 Piece(s) | 27 Day(s) or more | 100 | 140 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,449.21 | 1 Piece(s) | 27 Day(s) or more | 100 | 220 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,347.40 | 1 Piece(s) | 27 Day(s) or more | 100 | 250 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 1,437.49 | 1 Piece(s) | 27 Day(s) or more | 100 | 280 | Without magnet | - | - | - | Basic type | Male thread | - | - | ||
MYR 281.03 | 1 Piece(s) | 27 Day(s) or more | 20 | 45 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 298.75 | 1 Piece(s) | 27 Day(s) or more | 20 | 75 | Without magnet | - | - | - | Clevis shape | Female Thread | - | - | ||
MYR 291.17 | 1 Piece(s) | 27 Day(s) or more | 20 | 80 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 291.17 | 1 Piece(s) | 27 Day(s) or more | 20 | 90 | Without magnet | - | - | - | Clevis shape | Female Thread | - | - | ||
MYR 291.17 | 1 Piece(s) | 27 Day(s) or more | 20 | 100 | Without magnet | - | - | - | Clevis shape | Female Thread | - | - | ||
MYR 294.73 | 1 Piece(s) | 27 Day(s) or more | 25 | 14 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 273.05 | 1 Piece(s) | 27 Day(s) or more | 25 | 15 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 273.45 | 1 Piece(s) | 27 Day(s) or more | 25 | 20 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 285.90 | 1 Piece(s) | 27 Day(s) or more | 25 | 30 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 285.90 | 1 Piece(s) | 27 Day(s) or more | 25 | 40 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 285.90 | 1 Piece(s) | 27 Day(s) or more | 25 | 50 | Without magnet | - | - | - | Clevis shape | Male thread, long | - | - | ||
MYR 304.93 | 1 Piece(s) | 27 Day(s) or more | 25 | 60 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 328.60 | 1 Piece(s) | 27 Day(s) or more | 25 | 120 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 328.60 | 1 Piece(s) | 27 Day(s) or more | 25 | 125 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 338.80 | 1 Piece(s) | 27 Day(s) or more | 25 | 150 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 365.02 | 1 Piece(s) | 27 Day(s) or more | 25 | 200 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 407.76 | 1 Piece(s) | 27 Day(s) or more | 25 | 300 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 286.24 | 1 Piece(s) | 27 Day(s) or more | 32 | 10 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 303.45 | 1 Piece(s) | 27 Day(s) or more | 32 | 13 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 303.45 | 1 Piece(s) | 27 Day(s) or more | 32 | 15 | Without magnet | - | - | - | Clevis shape | Male thread | - | - | ||
MYR 312.34 | 1 Piece(s) | 27 Day(s) or more | - | 20 | Without magnet | - | - | - | Clevis shape | Male thread | - | - |
Loading...
| Rod Operation Method | Single Rods | Main Body Shape | Standard | Cylinder Operation Method | Double Acting |
|---|---|---|---|---|---|
| Additional Function | Standard | Environment, Applications | Standard | Cushion | Rubber cushion |
| Operating Pressure(MPa) | 0.05 to 0.7 |
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