
The AirTAC Airtac ATQ Single Acting Thin Cylinder ATQ40X5B is a genuine single-acting COMPACT (JIS) cylinder (single acting, pull type) with a Ø40mm bore and 5mm 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 ATQ40X5B is a single-acting pull-type compact cylinder where supplying air to one port retracts the 16mm piston rod, while an internal spring extends it upon exhaust. This fail-safe design ensures the rod automatically extends to its rest position if air pressure drops below the 0.2 MPa minimum, making it ideal for hold-down-release or tensioning logic. It delivers a theoretical pull force of 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa before spring deduction.
Unlike a double-acting actuator, this JIS compact unit uses a fixed NBR elastomer bumper at each end instead of an adjustable air cushion. The B suffix denotes a male-thread rod end (M14x1.5) that couples directly to your load. Although this specific configuration ships without a magnet, the body retains magnetic-switch grooves for external sensing. The 5mm stroke provides short, precise motion within the 30mm maximum limit for this 40mm bore.
| Model | Airtac ATQ Single Acting Thin Cylinder ATQ40X5B |
|---|---|
| Series | ATQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 5 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 528 N |
| 0.7 MPa | 739 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. |
|---|---|
| 40 | Bore size in mm. |
| ×5 | 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).
Uses the spring-extend fail-safe to hold a machining fixture open, pulling the 16mm rod back 5mm to release a finished metal part when air is applied.
Draws a sorting gate out of the path on a packaging line using the 527.8 N theoretical pull, letting the internal spring push it back into blocking position on exhaust.
Maintains belt or wire tension via the spring force, using the 5mm powered retract stroke to momentarily slacken the line for service adjustments.
For sizing context within the 12-63mm bore range, stepping down to a 32mm bore yields a 301.6 N theoretical pull at 0.5 MPa, while stepping up to a 50mm bore provides 824.6 N. Because single-acting strokes are short, any application requiring travel beyond 30mm necessitates switching to a double-acting ACQ cylinder. When ordering, verify the 40mm bore, 5mm stroke, the male M14x1.5 rod thread, and note this variant lacks the S magnet.
Quick checklist
It operates from 0.2 to 1.0 MPa, with 0.2 MPa being the minimum required to overcome the internal spring. The theoretical pull force is 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. These figures are theoretical before spring deduction; the return spring lowers the net output, so confirm exact net force from the datasheet.
It relies on a fixed NBR elastomer bumper at each end for impact absorption rather than an adjustable air cushion. As a single-acting pull type, if air is lost, the internal spring automatically extends the rod to its resting position, providing a fail-safe extend function.
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