Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø40mm bore and 25mm 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
- Stroke25 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 ASQ40X25B
The AirTAC ASQ40X25B is a single-acting, push-type JIS compact cylinder. Air delivered to one port extends the rod, while an internal mechanical spring handles the retraction. This design simplifies plumbing by requiring only one air line. With a 40 mm bore, it delivers a theoretical push force of 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa. Note that these figures represent theoretical output before the spring; the actual net force is lower and should be verified from the datasheet.
This specific configuration includes a male M14x1.5 rod-end thread for direct load coupling. It features a fixed NBR elastomer bumper at the stroke ends to soften impact, rather than an adjustable air cushion. The body retains standard magnetic-switch grooves, though this particular unit ships without the internal magnet. Operating pressure spans 0.2-1.0 MPa, with the 0.2 MPa minimum necessary to overcome the return spring.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 ASQ40X25B
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 ASQ40X25B Is Used
Fixture Clamping
Secures heavy machined blocks on a milling fixture using the male rod thread, relying on spring retraction for quick release.
Part Ejection
Pushes finished metal components off a high-speed conveyor line, with the single-acting design saving valve complexity.
Pin Insertion
Drives locating pins into assembly jigs where a short 25 mm stroke and fail-safe return prevent jamming on air loss.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B the Right Cylinder?
For a 40 mm bore, the ASQ40X25B offers a 25 mm stroke, well within the 30 mm maximum limit for this series. If your application requires less theoretical push force at 0.5 MPa, the neighboring 32 mm bore provides 402.1 N. Should you need greater output, the 50 mm bore yields 981.8 N. For travel distances beyond 30 mm, the double-acting ACQ series is required. When ordering, confirm the 40 mm bore, 25 mm stroke, the male M14x1.5 rod thread, and note the absence of the -S magnet option.
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 ASQ40X25B FAQ
It provides a theoretical push force of 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa before the return spring reduces the net output. Operating pressure is 0.2-1.0 MPa, requiring a 0.2 MPa minimum to overcome the spring. The maximum standard stroke for a 40 mm bore is 30 mm.
If air pressure is lost, the internal spring automatically retracts the rod to its resting position. At the stroke ends, a fixed NBR elastomer bumper absorbs impact; it is not adjustable, so external shock absorbers may be needed for high-energy loads.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ASQ Cylinders
Request a Quote for Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.