Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5S
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5S 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 ASQ40X5S
The AirTAC ASQ40X5S is a single-acting push-type JIS compact 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 requiring only one solenoid line. It delivers a theoretical push force of 628.3N at 0.5 MPa and 879.6N at 0.7 MPa before spring subtraction.
Because the return spring occupies internal length, this 40mm bore variant is limited to a 5mm stroke (max 30mm for this size). It features a fixed NBR elastomer bumper for end-of-stroke impact absorption rather than an adjustable air cushion. The -S suffix indicates a built-in piston magnet compatible with both reed and solid-state electronic switches via the body grooves. If air pressure drops below the 0.2 MPa minimum or is lost entirely, the spring provides a fail-safe retraction to the rest position.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5S Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5S |
|---|---|
| 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 ASQ40X5S
| 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 ASQ40X5S Is Used
Short-Stroke Clamping
Securing aluminum housings on a CNC machining fixture using the 628.3N theoretical push before the spring retracts on signal loss.
Carton Ejector
Pushing filled corrugated boxes off a packaging conveyor with a compact 5mm stroke and integrated spring return.
Part Hold-Down
Maintaining downward pressure on sheet metal during a stamping press load sequence, utilizing the fail-safe spring retract feature.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X5S the Right Cylinder?
For sizing, the neighboring Ø32 bore offers 402.1N at 0.5 MPa, while the larger Ø50 bore provides 981.8N at 0.5 MPa. If your application requires travel beyond the 30mm maximum for this single-acting series, the double-acting ACQ compact cylinder is the recommended alternative. When ordering, confirm the 40mm bore, 5mm stroke, -S magnet option, and the default M8x1.25 female 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 ASQ40X5S FAQ
The theoretical push force is 628.3N at 0.5 MPa and 879.6N at 0.7 MPa. The return spring lowers the net usable output, which should be confirmed from the datasheet. Minimum operating pressure is 0.2 MPa to overcome the spring, and the maximum stroke for this 40mm bore is 30mm.
It uses a fixed NBR elastomer bumper at the ends for impact absorption rather than an adjustable air cushion. The -S option includes a piston magnet for track grooves, allowing the use of either reed or electronic solid-state switches to confirm position.
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