Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5B
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5B is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø40mm bore and 5mm 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
- Stroke5 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 ASQ40X5B
The ASQ40X5B is a single-acting push-type JIS compact cylinder where air extends the 16mm rod, and an internal spring retracts it upon exhaust. It delivers a theoretical push force of 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa. Because an internal return spring is present, the actual net output is lower; confirm the exact net figure from the official datasheet before finalizing your design.
This 40mm bore variant features a PT1/8 port and a male M14x1.5 rod-end thread (-B option) for direct load coupling. It uses a fixed NBR elastomer bumper for end-of-stroke damping rather than an adjustable air cushion. Operating pressure must be at least 0.2 MPa to overcome the spring, and the 5mm stroke is well within the 30mm maximum limit for this bore size.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5B Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5B |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 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 ASQ40X5B
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | 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 ASQ40X5B Is Used
Press Die Ejection
Pushes stamped metal sheets out of a press die using the 628.3N theoretical extension force, relying on the internal spring to retract the pin safely.
Packaging Diverter
Briefly extends a 5mm male-threaded guide to deflect cartons on a packaging conveyor, retracting instantly when air is cut off.
Fixture Hold-Down
Applies targeted clamping pressure on an assembly fixture, utilizing the fail-safe spring return to release the part if air pressure drops.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5B the Right Cylinder?
For sizing, stepping down to a 32mm bore yields a 402.1 N theoretical push at 0.5 MPa, while stepping up to a 50mm bore provides 981.8 N. If your application requires travel beyond 30mm, you must switch to the double-acting ACQ series. To order this unit correctly, confirm the 40mm bore, 5mm stroke, the -B male rod thread, and note that no -S magnet is included here.
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 ASQ40X5B FAQ
It provides a theoretical push of 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa before the return spring lowers the net output. It is a single-acting cylinder requiring a minimum 0.2 MPa operating pressure, with a 5mm stroke (max 30mm for this 40mm bore).
It uses a fixed NBR elastomer bumper at the ends for damping, not an adjustable air cushion. Because it is single-acting, losing air pressure causes the internal spring to automatically retract the rod to its rest position.
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