Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series

Caution
- See catalog for specification details.
- Product pictures are representations. CAD data is not supported for some model numbers.
Product Description
Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series that is ideal for machine designs with small space requirements.
[Features]
· Square body shape that gives you flexibility for designing machines.
· Auto switch mounting direction allows for flexible design requirements.
· 2-way basic mounting.
· Non-rotating rod with high non-rotating accuracy.
Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series Details

Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series product image
Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series Specifications
| Tube Internal Diameter (mm) | 12 | 16 | 20 | 25 | |
|---|---|---|---|---|---|
| Operating method | Double acting, single rod | ||||
| Applicable fluids | Air | ||||
| Lubrication | Not required (non-lube) | ||||
| Proof pressure | 1.5 MPa | ||||
| Maximum operating pressure | 1.0 MPa | ||||
| Minimum operating pressure | 0.07 MPa | 0.05 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 | None, rubber bumper* | ||||
| Rod-end thread | Female thread | ||||
| Stroke length tolerance | Standard stroke: (0 to +1.0 mm) Long stroke: (0 to +1.4 mm)* | ||||
| Operating piston speed | 50 to 500 mm/s | ||||
| Allowable kinetic energy J | Standard type | 0.022 | 0.038 | 0.055 | 0.09 |
| With rubber bumper | 0.043 | 0.075 | 0.11 | 0.18 | |
- *Stroke length tolerance does not include the amount of bumper change.
- *Only rubber bumper is available for the long stroke type.
Model Number Notation

Model number example
Individual Made-to-Order Specifications
| Indicator symbol | Specifications/contents |
|---|---|
| -X271 | Fluororubber seals |
| -X525 | Long stroke of adjustable extension stroke cylinder (-XC8) |
| -X526 | Long stroke of adjustable extension stroke cylinder (-XC9) |
| -X1876 | With concave shape end boss on the cylinder tube head side |
Made to order specifications
| Indicator symbol | Specifications/contents |
|---|---|
| -XB6 | Heat-resistant cylinder (-10 to 150°C) without an auto switch |
| -XB7 | Cold-resistant cylinder (-40 to 70°C) without an auto switch |
| -XB9 | Low speed cylinder (10 to 50 mm/s) |
| -XB10 | Intermediate stroke (using exclusive body) |
| -XB13 | Low speed cylinder (5 to 50 mm/s) |
| -XC6 | Piston rod, retaining ring, rod-end nut made of stainless steel |
| -XC8 | Adjustable stroke cylinder / Adjustable extension type |
| -XC9 | Adjustable stroke cylinder / Adjustable retraction type |
| -XC36 | With boss on rod side |
| -XC85 | Grease for food processing equipment |
| -XC92 | Dust-resistant actuator |
Structural drawing

Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series Structural Drawing
Component Parts
| Number | Part name | Material | Note |
|---|---|---|---|
| 1 | Cylinder tube | Aluminum Alloy | Hard Anodize |
| 2 | Collar | Aluminum Alloy | Anodized |
| 3 | Piston | Aluminum Alloy | - |
| 4 | Piston rod | Stainless steel | - |
| 5 | Retaining Ring | Carbon tool steel | Phosphate coated |
| 6 | Rod-end nut | Carbon steel | Zinc chromate |
| 7 | Spacer for switch type | Aluminum Alloy | Chromate |
| 8 | Bumper A | Urethane | - |
| 9 | Damper B | Urethane | - |
| 10 | Bottom plate | Aluminum Alloy | Anodized |
| 11 | Collar | Aluminum Alloy | Anodized |
| 12 | Bushing | Oil-impregnated sintered alloy | - |
| 13 | Wear ring | Resin | - |
| 14 | Magnet | - | - |
| 15 | Centering location ring | Aluminum Alloy | Anodized |
| *16 | Rod Gasket | NBR | - |
| *17 | Piston Gasket | NBR | - |
| *18 | Tube gasket | NBR | - |
Replacement Parts: Seal Kit (Basic Type)
| Tube Internal Diameter (mm) | Order number | Content |
|---|---|---|
| 12 | CQSB12-PS | Seal kit includes (16), (17) and (18) |
| 16 | CQSB16-PS | |
| 20 | CQSB20-PS | |
| 25 | CQSB25-PS |
Replacement Parts: Seal Kit (Long Stroke)
| Tube Internal Diameter (mm) | Order number | Content |
|---|---|---|
| 12 | CQSB12-L-PS | Seal kit includes (16), (17) and (18) |
| 16 | CQSB16-L-PS | |
| 20 | CQSB20-L-PS | |
| 25 | CQSB25-L-PS |
- *Seal kit includes (16), (17) and (18). Order the seal kit based on each bore size. (The long stroke type includes 2 tube gaskets)
- *Since the seal kit does not include a grease pack, order it separately.
Grease pack part number: GR-S-010 (10 g)
Compact Cylinder, Standard Type, Double Acting, Single Rod CQS Series Example Dimensions

Standard type (through-hole / both ends tapped common): CQSB/CDQSB dimensional drawing
Male rod end
(Unit: mm)
| Bore size (mm) | B1 | C1 | H1 | Standard stroke | Long stroke | MM | X |
|---|---|---|---|---|---|---|---|
| L1 | L1 | ||||||
| 12 | 8 | 9 | 4 | 14 | 24 | M5 × 0.8 | 10.5 |
| 16 | 10 | 10 | 5 | 15.5 | 25.5 | M6 × 1.0 | 12 |
| 20 | 13 | 12 | 5 | 18.5 | 28.5 | M8 × 1.25 | 14 |
| 25 | 17 | 15 | 6 | 22.5 | 32.5 | M10 × 1.25 | 17.5 |
With Boss on Head End
(Unit: mm)
| Bore size (mm) | G | Th9 |
|---|---|---|
| 12 | 1.5 | 15 (-0.043 to 0) |
| 16 | 1.5 | 20 (-0.052 to 0) |
| 20 | 2 | 13 (-0.043 to 0) |
| 25 | 2 | 15 (-0.043 to 0) |
- *The product with boss on head end is applicable only to standard stroke.
- *With boss on rod end: option. (Suffix -XC36 to the end of the part number.) Note that only bore sizes ø12 (12‑mm diameter) and ø16 (16‑mm diameter) are applicable to the long stroke.
Standard type
(Unit: mm)
| Bore size (mm) | Standard stroke range (mm) | Standard stroke | Long stroke range (mm) | Long stroke | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without auto switch | With auto switch | With/without auto switch | ||||||||||||
| A | B | F | L | A | B | F | L | A | B | F | L | |||
| 12 | 5 to 30 | 20.5 | 17 | 5 | 3.5 | 25.5 | 22 | 5 | 3.5 | 35 to 200 | 45.5 | 32 | 7.5 | 13.5 |
| 16 | 5 to 30 | 20.5 | 17 | 5 | 3.5 | 25.5 | 22 | 5 | 3.5 | 35 to 200 | 45.5 | 32 | 7.5 | 13.5 |
| 20 | 5 to 50 | 24 | 19.5 | 5.5 | 4.5 | 34 | 29.5 | 5.5 | 4.5 | 75 to 200 | 55.5 | 41 | 8 | 14.5 |
| 25 | 5 to 50 | 27.5 | 22.5 | 5.5 | 5 | 37.5 | 32.5 | 5.5 | 5 | 75 to 300 | 59 | 44 | 9 | 15 |
(Unit: mm)
| Bore size (mm) | C | D | E | H | I | K | M | N | OA | OB | Q | RA | RB | T |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12 | 6 | 6 | 25 | M3 × 0.5 | 32 | 5 | 15.5 | 3.5 | M4 × 0.7 | 6.5 | 7.5 | 7 | 4 | 0.5 |
| 16 | 8 | 8 | 29 | M4 × 0.7 | 38 | 6 | 20 | 3.5 | M4 × 0.7 | 6.5 | 7.5 | 7 | 4 | 0.5 |
| 20 | 7 | 10 | 36 | M5 × 0.8 | 47 | 8 | 25.5 | 5.4 | M6 × 1.0 | 9 | 8 | 10 | 7 | 1 |
| 25 | 12 | 12 | 40 | M6 × 1.0 | 52 | 10 | 28 | 5.4 | M6 × 1.0 | 9 | 9 | 10 | 7 | 1 |
- *For the following bore/stroke sizes, the through-hole is threaded: Standard switch: ø12 (12‑mm diameter) and ø16 (16‑mm diameter) 5 stroke; ø20 (20‑mm diameter) 5 to 15 stroke, ø25 (25‑mm diameter) 5 and 10 stroke. Built-in magnet with auto switch: ø20 (20‑mm diameter) 5 mm stroke.
- *Rubber bumper type has the same dimensions as those indicated above.