Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20SB
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20SB 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 ASQ50X20SB
The AirTAC ASQ50X20SB is a JIS compact single-acting push cylinder. Feeding compressed air to its single PT1/4 port extends the Ø20mm rod, while an internal mechanical spring handles the retraction. This design cuts pneumatic plumbing down to one valve line. At 0.5 MPa, it generates a theoretical push of 981.8 N (1374.4 N at 0.7 MPa) before the return spring's resistance is factored in. Verify the exact net output force against the official datasheet for your specific load requirements.
This 50mm bore actuator includes a built-in magnet for position sensing, compatible with either reed or solid-state electronic switches. The -B option provides a male M18x1.5 thread on the rod end for direct load coupling. End-of-travel deceleration is managed by a fixed NBR elastomer bumper rather than an adjustable air cushion. Should air pressure drop below the 0.2 MPa minimum or be lost entirely, the spring safely retracts the rod to its resting position.
Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20SB Technical Specifications
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20SB |
|---|---|
| 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 ASQ50X20SB
| 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 ASQ50X20SB Is Used
Injection Mold Ejection
Pushes finished plastic parts out of injection molds during short-stroke ejection cycles where spring retraction guarantees a safe default rest state.
Carton Flap Folding
Extends to fold or secure packaging flaps on automated boxing lines, utilizing the compact body to fit within tight conveyor framework.
Heavy Part Hold-Down
Applies substantial downward clamping pressure to hold heavy metal components stationary during machining or drilling operations.
Is the Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20SB the Right Cylinder?
For sizing context within the ASQ single-acting family: stepping down to a 40mm bore drops the theoretical push to 628.3 N at 0.5 MPa, while moving up to a 63mm bore raises it to 1558.6 N at 0.5 MPa. This 20mm stroke sits well within the 30mm maximum limit for bore 50. If an application requires a longer travel distance than 30mm, the double-acting ACQ series is the correct alternative. To finalize this exact configuration, confirm the 50mm bore, 20mm stroke, the -S magnet option, and the -B male M18x1.5 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 ASQ50X20SB FAQ
It delivers a theoretical push of 981.8 N at 0.5 MPa and 1374.4 N 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. The maximum standard stroke available for this 50mm bore is 30mm.
If air pressure is lost, the internal spring immediately retracts the rod to its resting position. At the end of the stroke, impact energy is absorbed by a fixed NBR elastomer bumper, which is non-adjustable, unlike a standard air cushion.
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