
The AirTAC Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20 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.
The AirTAC ASQ50X20 is a single-acting push-type JIS compact cylinder. Supplying air to the single PT1/4 port extends the Ø20mm rod, while an internal mechanical spring handles retraction. This design requires only one air line, simplifying plumbing and valve requirements. The unit operates effectively within a 0.2-1.0 MPa pressure range, needing at least 0.2 MPa to overcome the return spring.
At 0.5 MPa, this 50mm bore generates a theoretical push force of 981.8 N (1374.4 N at 0.7 MPa) before spring subtraction. Because the internal spring occupies space, the stroke is limited to 20mm in this unit (max 30mm for the series). The piston features a fixed NBR elastomer bumper at the ends to mitigate impact, rather than an adjustable air cushion. Should air pressure drop, the spring ensures a fail-safe retraction to its resting position.
| Model | Airtac ASQ Series Single Acting Slim Cylinder ASQ50X20 |
|---|---|
| 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.
| 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.
| 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).
Pushes bushings or small dowel pins into machined housings on an automated machining center, utilizing the spring return to clear the area for the next part.
Extends to hold down corrugated carton flaps during the taping process on a packaging line, safely retracting when air is removed.
Ejects lightweight formed sheet metal blanks from a progressive die station, relying on the compact body and fixed bumper to handle rapid cycling.
When sizing this 50mm bore, stepping down to a 40mm cylinder yields a theoretical push of 628.3 N at 0.5 MPa, whereas stepping up to a 63mm bore provides 1558.6 N at 0.5 MPa. Confirm your required net output by subtracting the spring force from these theoretical values. If your application requires travel beyond the 30mm maximum stroke limit of this single-acting series, you must switch to the double-acting ACQ equivalent. To order correctly, verify the 50mm bore, 20mm stroke, default female M10x1.5 rod-end thread, and note this specific configuration ships without the -S magnet option.
Quick checklist
The theoretical push force is 981.8 N at 0.5 MPa and 1374.4 N at 0.7 MPa. These are pre-spring figures; the internal return spring lowers the net output, which must be confirmed from the datasheet. A minimum operating pressure of 0.2 MPa is required to overcome the spring. The maximum standard stroke for this bore is 30mm.
This model uses fixed NBR elastomer bumpers at the end of travel to absorb impact, rather than adjustable air cushions. Furthermore, as a single-acting push cylinder, it offers fail-safe operation; if air pressure is lost or exhausted, the internal spring automatically retracts the rod to its resting position.
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