
The AirTAC Airtac ATQ Single Acting Thin Cylinder ATQ50X20S is a genuine single-acting COMPACT (JIS) cylinder (single acting, pull type) with a Ø50mm bore and 20mm stroke. Air pulles 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 ATQ50X20S is a JIS compact single-acting pull cylinder. Feeding air to its single PT1/4 port retracts the Ø20 mm rod, while an internal spring drives the extension stroke upon exhaust. This fail-safe design ensures the rod extends automatically if air pressure drops below the 0.2 MPa minimum, making it well-suited for hold-down-release or tensioning tasks.
At 0.5 MPa, it generates 824.6 N of theoretical pull (1154.5 N at 0.7 MPa). These figures represent the air-side force before the return spring; the internal spring lowers the net usable output, so verify the exact net force from the datasheet. The 50 mm bore body uses fixed NBR elastomer bumpers at the ends for impact absorption rather than adjustable air cushions. Equipped with the -S magnet, its sensor grooves accept both reed and solid-state electronic switches.
| Model | Airtac ATQ Single Acting Thin Cylinder ATQ50X20S |
|---|---|
| Series | ATQ JIS compact single-acting cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull 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 | Pull force (before spring) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
These are theoretical air-side forces; the return-spring force reduces the NET usable output. Single-acting pull only — the spring performs the opposite stroke. Confirm the net figure from the datasheet and size with a safety margin.
| ATQ | JIS compact single acting, pull 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).
Provides controlled cable or belt tensioning in packaging lines, using air to pull back against the load and relying on spring extension to maintain baseline tension.
Holds a workpiece during machining by pulling a clamp closed; the spring-extend fail-safe automatically releases the clamp when air is exhausted.
Pneumatically pulls a diverter gate out of the product flow on a conveyor; the internal spring pushes the gate back into the divert position upon air loss.
For sizing alternatives within the 12-63 mm range, stepping down to a 40 mm bore yields a 527.8 N theoretical pull at 0.5 MPa, while stepping up to a 63 mm bore provides 1401.5 N. If your mechanism requires a travel distance beyond the 30 mm maximum single-acting stroke for this 50 mm bore, you must switch to the double-acting ACQ series. When ordering this model, verify the 20 mm stroke, the inclusion of the S magnet, and the default female M10x1.5 rod-end thread.
Quick checklist
It provides a theoretical pull of 824.6 N at 0.5 MPa and 1154.5 N at 0.7 MPa before the return spring. The spring lowers the net output force, which must be confirmed from the datasheet. Operating pressure is 0.2-1.0 MPa (0.2 MPa minimum to overcome the spring), and the maximum standard stroke for this 50 mm bore is 30 mm.
It uses fixed NBR elastomer bumpers at the stroke ends to absorb impact rather than an adjustable air cushion. The included -S magnet allows position detection via either reed or electronic solid-state switches mounted in the body's sensor grooves.
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