Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30SB
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30SB is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø40mm bore and 30mm 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
- Stroke30 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 ASQ40X30SB
The AirTAC ASQ40X30SB is a single-acting push-type JIS compact cylinder. Supplying air to its single PT1/8 port extends the rod, while an internal mechanical spring handles retraction. This design simplifies plumbing by requiring only one air line. The 40mm bore generates a theoretical push force of 628.3N at 0.5 MPa and 879.6N at 0.7 MPa. Because the return spring consumes energy, the net usable output is lower; verify the exact net figure from the official datasheet.
This specific configuration includes a built-in piston magnet (-S) for position sensing and a male M14x1.5 rod-end thread (-B) for direct load coupling. Travel is capped at a 30mm stroke due to the internal spring length. Instead of adjustable air cushions, it relies on fixed NBR elastomer bumpers at the end caps to absorb impact. If pneumatic pressure drops, the spring provides a fail-safe return, pulling the rod back to its resting position.
Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30SB Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30SB |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 ASQ40X30SB
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 ASQ40X30SB Is Used
Stamping Pin Ejection
Pushes finished stamped metal pins out of a die cavity on an automotive parts press using the 879.6N theoretical extension force.
Carton Flap Hold-down
Temporarily holds corrugated cardboard flaps flat during automated tape sealing on a packaging line before the spring retracts the rod.
Component Clamping
Secures aluminum machined blocks against a jig for a CNC drilling operation, releasing the grip instantly when air is exhausted.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ40X30SB the Right Cylinder?
For sizing, stepping down to the 32mm bore lowers the theoretical push to 402.1N at 0.5 MPa, while stepping up to the 50mm bore raises it to 981.8N at 0.5 MPa. If your application requires travel beyond the 30mm maximum limit of this single-acting design, consider the double-acting ACQ series instead. When ordering, confirm the 40mm bore, 30mm stroke, -S magnet for electronic or reed switches, and -B male M14x1.5 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 ASQ40X30SB FAQ
It provides a theoretical push of 628.3N at 0.5 MPa and 879.6N at 0.7 MPa before the return spring lowers the net output. Operating pressure must be 0.2-1.0 MPa to overcome the spring, and the maximum stroke is 30mm.
The -S option provides a piston magnet compatible with reed or solid-state electronic switches. Impact is managed by fixed NBR elastomer bumpers, not adjustable cushions, and loss of air triggers a fail-safe spring retraction.
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