Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25 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 ASQ40X25
The AirTAC ASQ40X25 is a single-acting push-type compact cylinder where air extends the rod and an internal spring retracts it. This JIS-format actuator provides a theoretical push force of 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa before spring deduction. You must confirm the lower net output from the datasheet for your specific load.
Operating on a single air line simplifies plumbing and saves valve ports. The 40 mm bore uses a PT1/8 port and a Ø16 mm rod with a female M8x1.25 thread. It relies on a fixed NBR elastomer bumper at the ends rather than an adjustable cushion, and requires a minimum operating pressure of 0.2 MPa to overcome the return mechanism.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25 Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25 |
|---|---|
| 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 ASQ40X25
| 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 ASQ40X25 Is Used
Stamping Pin Locating
Extends a short 25 mm rod to position blanks accurately in a stamping die before the press cycles, relying on spring retraction to clear the area.
Package Diverter
Pushes lightweight cartons off a sorting line using a single air line, with the internal spring ensuring the diverter arm resets safely if air pressure drops.
Fixture Hold-Down
Secures aluminum housings inside a machining fixture using its 628.3 N theoretical push, releasing the part instantly when exhaust vents the chamber.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X25 the Right Cylinder?
For sizing context, stepping down to a 32 mm bore drops the theoretical push to 402.1 N at 0.5 MPa, while moving up to a 50 mm bore raises it to 981.8 N. This 40 mm model offers a 25 mm stroke, safely under the 30 mm maximum for this bore. If your application requires longer travel, you must switch to the double-acting ACQ series. When ordering, verify the bore, stroke, female rod thread, and note this unit lacks 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 ASQ40X25 FAQ
The theoretical push force is 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa. Because an internal spring returns the rod, the net usable force is lower and must be verified via the datasheet. A minimum operating pressure of 0.2 MPa is required to overcome the spring, and the maximum stroke is capped at 30 mm.
This cylinder uses fixed NBR elastomer bumpers at the stroke ends to absorb impact; it does not feature adjustable air cushions. While the body retains magnetic-switch grooves, this specific configuration ships without the -S magnet, so position sensing is not available out of the box.
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Related AirTAC ASQ Cylinders
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