Smooth Cylinder CQSY Series

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.
Product Description
A special cylinder with low friction, even during bi-directional operation.
[Features]
· An air cylinder with reduced stick-slip at low speed ranges.
· Stable operation possible even at 5 mm/s (based on JIS B 8377).
· Lightweight and with improved functionality (new structure equivalent to the standard models).
· Interchangeable (mounting compatibility) with standard products.
*See the SMC catalog for specification details.
*Product pictures are representative images. CAD data is not supported for some model numbers.
Smooth Cylinder CQSY Series Specifications

Smooth Cylinder CQSY Series external appearance

Smooth Cylinder CQSY Series JIS symbol (rubber bumper)
Specifications
| Tube Inner Diameter (mm) | 12 | 16 | 20 | 25 |
|---|---|---|---|---|
| Model | Pneumatic (non-lube) type | |||
| Action | Double acting, single rod | |||
| Fluid | Air | |||
| Proof Pressure | 1.05 MPa | |||
| Maximum operating pressure | 0.7 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) | |||
| Cushioning | Rubber cushion | |||
| Rod-end thread | Female thread | |||
| Stroke Length Tolerance | +1.0 mm* 0 | |||
| Piston Speed | 5 to 500 mm/s | |||
| Allowable leakage rate | 0.5 L/min (ANR) or less | |||
*The stroke length tolerance does not include bumper deflection.
Minimum Operating Pressure
(Units: MPa)
| Tube Inner Diameter (mm) | 12 | 16 | 20 | 25 |
|---|---|---|---|---|
| Minimum Operating Pressure | 0.03 | 0.02 | ||
Standard Stroke Table
| Tube Inner Diameter (mm) | Standard Stroke (mm) |
|---|---|
| 12, 16 | 5, 10, 15, 20, 25, 30 |
| 20, 25 | 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 |
Weight Table / Without Auto Switch
(Unit: g)
| Tube Internal Diameter (mm) | Cylinder stroke (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| 12 | 37 | 43 | 50 | 57 | 63 | 70 | - | - | - | - |
| 16 | 49 | 57 | 66 | 74 | 83 | 92 | - | - | - | - |
| 20 | 75 | 88 | 101 | 114 | 127 | 140 | 153 | 165 | 178 | 191 |
| 25 | 109 | 125 | 140 | 156 | 172 | 188 | 204 | 220 | 236 | 252 |
With standard stroke
Calculation Example) CQSYD20-20DCM
- ¡Basic weight: CQSYB20-20DC 114 g
- Additional weight: rod end male thread 10 g
- Additional weight: double clevis type 92 g
Total 216 g
*Refer to the SMC catalog for the additional weight table.
Weight List / With Auto Switch (Built-In Magnet)
(Unit: g)
| Tube Internal Diameter (mm) | Cylinder stroke (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |
| 12 | 45 | 51 | 58 | 65 | 71 | 78 | - | - | - | - |
| 16 | 59 | 67 | 76 | 85 | 94 | 103 | - | - | - | - |
| 20 | 106 | 119 | 132 | 145 | 157 | 170 | 183 | 195 | 208 | 221 |
| 25 | 151 | 167 | 183 | 199 | 215 | 231 | 246 | 262 | 278 | 294 |
Dimensions / ø12 to 25 mm
(Units: mm)
Standard Type (Through-Hole / Both Ends Tapped Common): CQSYB, CDQSYB

ø12 mm dimensional drawing

ø16 mm dimensional drawing 1

ø16 mm dimensional drawing 2

ø20 mm / ø25 mm dimensional drawing

ø20 mm / ø25 mm dimensional drawing - with rod end male threading
| Tube Internal Diameter (mm) | B1 | C1 | H1 | L1 | MM | X |
|---|---|---|---|---|---|---|
| 12 | 8 | 9 | 4 | 14 | M5 × 0.8 | 10.5 |
| 16 | 10 | 10 | 5 | 15.5 | M5 × 1.0 | 12 |
| 20 | 13 | 12 | 5 | 18.5 | M8 × 1.25 | 14 |
| 25 | 17 | 15 | 6 | 22.5 | M10 × 1.25 | 17.5 |

ø20 (diameter 20 mm) / ø25 (diameter 25 mm) dimensional drawing, with boss on head
| Tube Internal Diameter (mm) | G | Th9 |
|---|---|---|
| 12 | 1.5 | 15 (-0.043 to 0) |
| 16 | 1.5 | 20 (-0.052 to 00 |
| 20 | 2 | 13 (-0.043 to 0) |
| 25 | 2 | 15 (-0.043 to 0) |
*The product with a boss on the head side is applicable only with standard strokes.
Standard type
| Tube Internal Diameter (mm) | Stroke Range (mm) | Without auto switch | With auto switch | C | D | E | F | H | I | K | L | M | N | OA | OB | Q | RA | RB | T | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | A | B | ||||||||||||||||||
| 12 | 5 to 30 | 25.5 | 22 | 30.5 | 27 | 6 | 6 | 25 | 5 | M3 × 0.5 | 32 | 5 | 3.5 | 15.5 | 3.5 | M4 × 0.7 | 6.5 | 7.5 | 7 | 4 | 0.5 |
| 16 | 5 to 30 | 25.5 | 22 | 30.5 | 27 | 8 | 8 | 29 | 5 | M4 × 0.7 | 38 | 6 | 3.5 | 20 | 3.5 | M4 × 0.7 | 6.5 | 7.5 | 7 | 4 | 0.5 |
| 20 | 5 to 50 | 29 | 24.5 | 39 | 34.5 | 7 | 10 | 36 | 5.5 | M5 × 0.8 | 47 | 8 | 4.5 | 25.5 | 5.4 | M6 × 1.0 | 9 | 8 | 10 | 7 | 1 |
| 25 | 5 to 50 | 32.5 | 27.5 | 42.5 | 37.5 | 12 | 12 | 40 | 5.5 | M6 × 1.0 | 52 | 10 | 5 | 28 | 5.4 | M6 × 1.0 | 9 | 9 | 10 | 7 | 1 |
*For the following bore/stroke sizes, the through-hole is threaded - Standard type: ø20 mm; 5 to 10 stroke and ø25 mm; 5 stroke.
*See the SMC catalog for dimensional drawings and dimensions tables not detailed above.