Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø40mm bore and 30mm stroke. Air pushes the rod and an internal spring performs the opposite stroke, so one solenoid line drives the motion — ideal for short-stroke clamping and ejection in tight spaces.
- BoreØ40 mm
- Stroke30 mm
- Port sizePT1/8
- Acting typeSingle acting, push type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionBumper
About the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S
The AirTAC ASQ40X30S is a JIS compact single-acting push cylinder. Supplying air to its single PT1/8 port extends the Ø16mm rod, while an internal spring retracts it upon exhaust. This design simplifies plumbing by needing just one solenoid line. Theoretical push force is 628.3N at 0.5MPa and 879.6N at 0.7MPa (before spring); the return spring lowers net output, so verify the exact figure from the datasheet.
This 40mm bore unit features a fixed NBR elastomer bumper at the ends to soften impact, rather than an adjustable air cushion. It includes a built-in piston magnet (-S) for position sensing, compatible with reed or solid-state switches. Operating pressure is 0.2-1.0 MPa, requiring a 0.2 MPa minimum to overcome the spring. Stroke length is 30mm, the maximum standard travel for this bore size.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Single acting, push type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Bumper |
| Max standard stroke | Up to 30 mm |
Specifications follow the official AirTAC ACQ-family datasheet. Single-acting types start at 0.2 MPa (the spring must be overcome). Confirm against the product label before installation.
Theoretical Output Force (Ø40mm, Push)
| Pressure | Push force (before spring) |
|---|---|
| 0.5 MPa | 628 N |
| 0.7 MPa | 880 N |
These are theoretical air-side forces; the return-spring force reduces the NET usable output. Single-acting push only — the spring performs the opposite stroke. Confirm the net figure from the datasheet and size with a safety margin.
Model Code: Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | Stroke length in mm (single-acting max 30 mm). |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard (G / NPT available). ASQ pushes out / spring returns; ATQ pulls in / spring extends. Related: ACQ (double acting), ACQD (double rod), ACQJ (adjustable stroke).
Where the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S Is Used
CNC Fixture Clamping
Pushes a short-stroke jaw to lock aluminum blocks in a CNC milling vise, automatically releasing parts when air is removed.
Transfer Line Ejection
Briefly extends to knock finished metal parts off a conveyor belt into a collection bin before springing back to clear the path.
Press Pin Insertion
Drives dowel pins into sheet metal housings on an assembly line, relying on the 628.3N theoretical push at 0.5MPa.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S the Right Cylinder?
For sizing down, the 32mm bore offers 402.1N theoretical push at 0.5MPa; for higher force, the 50mm bore provides 981.8N at 0.5MPa. If your application requires travel beyond 30mm, switch to the double-acting ACQ series. When ordering, confirm the 40mm bore, 30mm stroke, -S magnet, and default female M8x1.25 rod-end thread.
Quick checklist
- ✓ Net push force (after spring) at your pressure
- ✓ Stroke ≤ 30 mm (single-acting limit)
- ✓ Single air line saves a valve/port
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Remember the spring performs the return stroke.
- check Avoid side load on the short piston rod.
- check Handle the C-clip carefully; seat it fully in its groove.
- check Installation by qualified personnel per AirTAC docs.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30S FAQ
The theoretical push force (before spring) is 628.3N at 0.5MPa and 879.6N at 0.7MPa. The internal return spring lowers the net output, so confirm the exact figure from the datasheet. It is a single-acting push cylinder requiring a 0.2 MPa minimum operating pressure, with a 30mm maximum standard stroke.
It includes a built-in magnet (-S) for use with reed or solid-state electronic switches mounted in the body grooves. Instead of an adjustable air cushion, it uses a fixed NBR elastomer bumper to absorb impact at the stroke ends. If cycle speeds are very high, consider adding an external shock absorber.
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