Airtac ASQ Series Single Acting Slim Cylinder ASQ40X15S
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X15S is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø40mm bore and 15mm 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
- Stroke15 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 ASQ40X15S
The AirTAC ASQ40X15S is a single-acting, push-type JIS compact cylinder. Supplying air to its single PT1/8 port extends the Ø16 mm rod, while an internal mechanical spring handles the retraction. This design simplifies plumbing by requiring only one solenoid 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. Because an internal return mechanism occupies chamber space, the practical stroke is limited to 30 mm or less for this series.
The return component inherently reduces the net usable output, so treat the stated forces as theoretical values prior to spring deduction and confirm the exact net figure from the datasheet. This unit includes the -S magnet option for position sensing via reed or solid-state switches fitted into the body grooves. A fixed NBR elastomer bumper manages end-of-stroke impact, and the default female M8x1.25 rod-end thread eases tooling attachment. If air pressure drops, the spring safely pulls the rod back to its retracted resting state.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X15S Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X15S |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 ASQ40X15S
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 ASQ40X15S Is Used
Jig Clamping
Provides reliable hold-down pressure for machining jigs where a 15 mm extension and fail-safe spring retract secure the workpiece.
Package Ejection
Pushes completed cartons off a packaging line conveyor using 628.3 N theoretical force before the spring resets the rod.
Part Locating
Positions metal stampings on an assembly press, utilizing the fixed NBR bumper to absorb the 15 mm end-of-trroke impact.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X15S the Right Cylinder?
When sizing this 40 mm bore actuator, consider the ASQ32X15S (402.1 N theoretical push at 0.5 MPa) for lighter duties, or the ASQ50X15S (981.8 N at 0.5 MPa) if your load demands greater thrust. The 15 mm stroke is well within the 30 mm maximum for this bore size. Should your application require longer travel, switching to the double-acting ACQ series is necessary. To finalize your order, verify the 40 mm bore, the 15 mm stroke, the -S magnet for sensors, and the default female rod 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 ASQ40X15S FAQ
The theoretical push force is 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa. Because it is single-acting, the internal spring lowers the net output, so verify the exact net figure from the datasheet. A minimum operating pressure of 0.2 MPa is required to overcome the spring, and the maximum standard stroke is 30 mm.
If air is exhausted or pressure drops below 0.2 MPa, the internal spring automatically retracts the rod to its resting position. End-of-stroke impact is managed by a fixed NBR elastomer bumper, not an adjustable air cushion. For high kinetic energy loads, consider adding an external shock absorber.
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