Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø50mm 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.
- BoreØ50 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeSingle acting, push type
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionBumper
About the Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH
The AirTAC ASQ50X25SBH is a JIS compact, single-acting push-type cylinder. Supplying air to the single PT1/4 port extends the rod, while an internal mechanical spring fully retracts it upon exhaust. This single-air-line design drastically simplifies valve plumbing. It provides a 981.8 N theoretical push force at 0.5 MPa (1374.4 N at 0.7 MPa) before spring resistance, meaning the usable net output is lower and must be verified from the datasheet.
This 50 mm bore unit carries a 25 mm stroke, safely under the 30 mm maximum limit for this size. It includes a built-in piston magnet for position sensing, compatible with reed or solid-state electronic switches. The male M18x1.5 rod-end thread couples directly to tooling, and a fixed NBR elastomer bumper absorbs end-of-stroke impact without requiring adjustment.
Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push type |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 (Ø50mm, Push)
| Pressure | Push force (before spring) |
|---|---|
| 0.5 MPa | 982 N |
| 0.7 MPa | 1374 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 ASQ50X25SBH
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 50 | 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 ASQ50X25SBH Is Used
Injection Mold Ejection
Uses the 981.8 N theoretical push to knock finished plastic parts out of mold cavities, with the spring ensuring the pin retracts clear during the next molding cycle.
Heavy-Duty Part Clamping
Holds thick steel plates stationary on a welding jig; the male M18x1.5 thread secures a custom clamp pad while the single-acting design cuts pneumatic complexity.
Pallet Hold-Down
Presses shipping pallets flat against a conveyor bed for wrapping, utilizing the fixed NBR bumper to absorb the impact of the 50 mm bore piston at cycle end.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ50X25SBH the Right Cylinder?
For slightly lower force requirements, the 40 mm bore version yields a 628.3 N theoretical push at 0.5 MPa. If your application requires greater thrust, the 63 mm bore provides 1558.6 N at 0.5 MPa. Remember that single-acting strokes are intentionally short due to the internal spring; if your mechanism needs travel beyond 30 mm, you must switch to a double-acting ACQ series cylinder. When ordering this configuration, verify the 50 mm bore, 25 mm stroke, the S magnet option, the B male rod thread, and the PT1/4 port size.
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 ASQ50X25SBH FAQ
It delivers a theoretical push force of 981.8 N at 0.5 MPa and 1374.4 N at 0.7 MPa. These figures represent the air-side force before the return spring; the net usable output is lower and should be confirmed from the datasheet. Operating pressure must be at least 0.2 MPa to overcome the spring, up to a maximum of 1.0 MPa. The maximum standard stroke for a 50 mm bore is 30 mm.
If air pressure is lost or exhausted, the internal spring automatically retracts the rod to its rest position, providing a fail-safe return. End-of-stroke impact is managed by a fixed NBR elastomer bumper, which is not adjustable. For high-speed or high-energy cycles, consider adding an external shock absorber or slowing the approach speed.
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