Standard Air Cylinder Single Acting/Spring Return Extend CJ2 Series

Caution
- ■ SMC Product Line
Webpages for products currently without individual pages on this site will be released on an ad-hoc basis. - Click on the catalog tab [Standards information] and refer to pp. 1,581–1,672 for a separate catalog for the auto switch.
- 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.
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Product Description
Standard type single acting spring extend, spring return air cylinder.
[Features]
· Double foot, head flange and double-side bossed are added to the mounting types.
· Improved amount of cylinder mounting freedom.
· Head cover with boss is also available.
· Easy fine adjustments of auto switch position.
· Transparent switch bracket improves visibility of the indicator lamp.
・ Head cover port location perpendicular to axis is newly added to ø6.
・ Part numbers with rod tip brackets and pivot brackets have been set.
Air Cylinder, Standard Type, Single Acting, Spring Extend/Return Specifications
Specifications

Air cylinder (spring return, extend) product image

Single acting, spring return, rubber bumper / Single acting, spring extend, rubber bumper
| Tube Inner Diameter (mm) | 6 | 10 | 16 | |
|---|---|---|---|---|
| Action | Single acting, spring return / single acting, spring extend | |||
| Fluid | Air | |||
| Proof Pressure | 1 MPa | |||
| Maximum operating pressure | 0.7 MPa | |||
| Minimum operating pressure | Single acting, spring return | 0.2 MPa | 0.15 MPa | |
| Single acting, spring extend | 0.25 MPa | 0.15 MPa | ||
| Ambient and Fluid Temperature | Without auto switch: -10°C to 70 ℃ With auto switch: -10°C to 60°C (no freezing) | |||
| Cushioning | Rubber cushion | |||
| Lubrication | Not required (non-lubricated) | |||
| Stroke Length Tolerance | 0 to +1.0 | |||
| Piston Speed | 50 to 750 mm/s | |||
| Allowable Kinetic Energy | 0.012 J | 0.035 J | 0.090 J | |
Standard Strokes (Unit: mm)
| Tube inner diameter | Standard Stroke |
|---|---|
| 6 | 15, 30, 45, 60 |
| 10 | 15, 30, 45, 60 |
| 16 | 15, 30, 45, 60, 75, 100, 125, 150 |
Weights (Unit: g)
Spring Return
| Tube Inner Diameter (mm) | 6 | 10 | 16 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mounting | Basic type | Axial direction piping | Double-side bossed | Basic type | Axial direction piping | Double Clevis (including clevis pin) | Double-side bossed | Basic type | Axial direction piping | Double Clevis (including clevis pin) | Double-side bossed | |
| Basic weight | 15 stroke | 17 | 15 | 18 | 28 | 28 | 29 | 28 | 62 | 62 | 69 | 64 |
| 30 stroke | 20 | 18 | 21 | 35 | 35 | 35 | 35 | 77 | 77 | 84 | 79 | |
| 45 stroke | 23 | 21 | 23 | 44 | 44 | 45 | 45 | 95 | 95 | 102 | 97 | |
| 60 stroke | 26 | 24 | 27 | 54 | 54 | 55 | 54 | 113 | 113 | 119 | 115 | |
| 75 stroke | - | - | 134 | 134 | 141 | 136 | ||||||
| 100 stroke | 167 | 167 | 174 | 169 | ||||||||
| 125 stroke | 204 | 204 | 212 | 206 | ||||||||
| 150 stroke | 227 | 227 | 234 | 229 | ||||||||
| Mounting bracket weight | Single foot type | 8 | 8 | 8 | 8 | 25 | ||||||
| Double foot type | 16 | 16 | 16 | 16 | 50 | |||||||
| Rod-end flange type | 5 | 5 | 5 | 5 | 13 | |||||||
| Head-end flange type | 5 | 5 | 5 | 5 | 13 | |||||||
| Accessories | Clevis Pin | - | - | - | - | - | 1 | - | - | - | 3 | - |
| Single-action connecting pin for double clevis | - | - | - | - | - | 2 | - | - | - | 4 | - | |
| Single knuckle joint | - | - | - | 17 | 23 | |||||||
| U-Shaped Knuckle Joint (Including knuckle pin) | - | - | - | 25 | 21 | |||||||
| U-Shaped Knuckle Joint (Including single-action connection pin) | - | - | - | 26 | 22 | |||||||
| Rod-end cap (flat type) | 1 | 1 | 1 | 1 | 2 | |||||||
| Rod-end cap (round type) | 1 | 1 | 1 | 1 | 2 | |||||||
| Pivot bracket (T bracket) | - | - | - | 32 | 50 | |||||||
Precautions
- Mounting nut and rod-end nut are included in the basic weight.
- For the double clevis type, the mounting nut is not included in the basic weight, so the mounting nut portion is subtracted.
Calculation
Example: CJ2L10-45SZ (44 + 8 = 52 g)
- Basic weight: 44 (ø10-45 [10‑mm to 45‑mm diameter] stroke)
- Mounting bracket weight: 8 (single foot type)
Spring Extend
| Tube Inner Diameter (mm) | 6 | 10 | 16 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mounting | Basic type | Double-side bossed | Basic type | Axial direction piping | Double Clevis (including clevis pin) | Double-side bossed | Basic type | Axial direction piping | Double Clevis (including clevis pin) | Double-side bossed | |
| Basic weight | 15 stroke | 18 | 19 | 28 | 28 | 30 | 29 | 63 | 63 | 71 | 67 |
| 30 stroke | 21 | 22 | 34 | 34 | 36 | 35 | 77 | 77 | 85 | 80 | |
| 45 stroke | 24 | 24 | 42 | 42 | 44 | 43 | 93 | 93 | 100 | 96 | |
| 60 stroke | 27 | 28 | 51 | 51 | 52 | 51 | 109 | 109 | 116 | 112 | |
| 75 stroke | - | - | 129 | 129 | 137 | 133 | |||||
| 100 stroke | 159 | 159 | 166 | 162 | |||||||
| 125 stroke | 193 | 193 | 201 | 196 | |||||||
| 150 stroke | 213 | 213 | 221 | 217 | |||||||
| Mounting bracket weight | Single foot type | 8 | 8 | 8 | 25 | ||||||
| Double foot type | 16 | 16 | 16 | 50 | |||||||
| Rod-end flange type | 5 | 5 | 5 | 13 | |||||||
| Head-end flange type | 5 | 5 | 5 | 13 | |||||||
| Accessories | Clevis Pin | - | - | - | - | 1 | - | - | - | 3 | - |
| Single-action connecting pin for double clevis | - | - | - | - | 2 | - | - | - | 4 | - | |
| Single knuckle joint | - | - | 17 | 23 | |||||||
| U-Shaped Knuckle Joint (Including knuckle pin) | - | - | 25 | 21 | |||||||
| U-Shaped Knuckle Joint (Including single-action connection pin) | - | - | 26 | 22 | |||||||
| Rod-end cap (flat type) | 1 | 1 | 1 | 2 | |||||||
| Rod-end cap (round type) | 1 | 1 | 1 | 2 | |||||||
| Pivot bracket (T bracket) | - | - | 32 | 50 | |||||||
Precautions
- Mounting nut and rod-end nut are included in the basic weight.
- For the double clevis type, the mounting nut is not included in the basic weight, so the mounting nut portion is subtracted.
Calculation
Example: CJ2L10-45TZ (42 + 8 = 50 g)
- Basic weight: 42 (ø10-45 [10‑mm to 45‑mm diameter] stroke)
- Mounting bracket weight: 8 (single foot type)