Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20S
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20S is a genuine single-acting COMPACT (JIS) cylinder (single acting, push type) with a Ø50mm bore and 20mm 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
- Stroke20 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 ASQ50X20S
The AirTAC ASQ50X20S is a JIS compact single-acting push cylinder with a 50mm bore and 20mm stroke. Feeding air to the single PT1/4 port extends the Ø20mm rod, while an internal mechanical spring handles retraction. This design cuts plumbing to one solenoid line and provides a fail-safe retract to the rest position upon air loss. Theoretical push output is 981.8N at 0.5MPa and 1374.4N at 0.7MPa.
Because the return mechanism occupies internal length, travel is capped at 30mm for this bore size; longer movements require a double-acting ACQ. The theoretical figures represent the air-side push before the spring's resistance, so confirm the lower net output from the datasheet. This unit includes the -S piston magnet for position sensing and uses a fixed NBR elastomer bumper at the stroke ends rather than an adjustable air cushion.
Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20S Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20S |
|---|---|
| Series | ASQ JIS compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 ASQ50X20S
| ASQ | JIS compact single acting, push type cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 ASQ50X20S Is Used
Stamping Press Ejection
Uses the 981.8N theoretical push to eject formed metal parts from a stamping die, relying on the spring to safely withdraw the rod when air is cut.
Carton Flap Folding
Provides short 20mm travel to fold packaging flaps on a high-speed line, where the fixed NBR bumper absorbs end-of-stroke impact without adjustment.
Heavy Part Hold-Down
Applies 1374.4N of theoretical force at 0.7MPa to hold heavy automotive components during machining, using the -S magnet to confirm clamp status.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20S the Right Cylinder?
For sizing context within the 12-63mm range: the smaller Ø40 bore yields a 628.3N theoretical push at 0.5MPa, while the larger Ø63 bore provides 1558.6N. If your application needs travel beyond the 30mm maximum for this single-acting series, switch to the double-acting ACQ. To order the ASQ50X20S correctly, verify the 50mm bore, 20mm stroke (under the 30mm limit), the included -S magnet, and the default female M10x1.5 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 ASQ50X20S FAQ
Theoretical push is 981.8N at 0.5MPa and 1374.4N at 0.7MPa. These are air-side figures before the return spring lowers the net output, which must be confirmed from the datasheet. Operating pressure is 0.2-1.0 MPa, with a 0.2 MPa minimum needed to overcome the spring. Maximum standard stroke is 30mm.
Loss of air pressure causes the internal spring to instantly retract the rod to its rest position. At the end of travel in either direction, impact is absorbed by a fixed NBR elastomer bumper, which is not adjustable; for high kinetic energy loads, slow the approach speed or use an external shock absorber.
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