Airtac ATQ Single Acting Thin Cylinder ATQ40X20B
The AirTAC Airtac ATQ Single Acting Thin Cylinder ATQ40X20B is a genuine single-acting COMPACT (JIS) cylinder (single acting, pull type) with a Ø40mm 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.
- BoreØ40 mm
- Stroke20 mm
- Port sizePT1/8
- Acting typeSingle acting, pull type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionBumper
About the Airtac ATQ Single Acting Thin Cylinder ATQ40X20B
The AirTAC ATQ40X20B is a single-acting PULL-type compact cylinder. Supplying air to the single PT1/8 port retracts the 16mm rod, while an internal spring extends it upon exhaust. This fail-safe extend behavior naturally suits hold-down-release and tensioning logic. It provides a theoretical pull force of 527.8N at 0.5MPa and 738.9N at 0.7MPa before the spring deduction; verify the net output via the datasheet.
Designed with a 40mm bore and 20mm stroke, this JIS-format actuator features a male M14x1.5 rod-end thread for direct load coupling. The riveted body incorporates a fixed NBR elastomer bumper at each end to soften end-of-stroke impact, rather than an adjustable air cushion. The structure includes sensor grooves for tracking position, though this specific configuration ships without a magnet.
Airtac ATQ Single Acting Thin Cylinder ATQ40X20B Technical Specifications
| Model | Airtac ATQ Single Acting Thin Cylinder ATQ40X20B |
|---|---|
| Series | ATQ JIS compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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.
Theoretical Output Force (Ø40mm, Pull)
| 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.
Model Code: Airtac ATQ Single Acting Thin Cylinder ATQ40X20B
| ATQ | JIS compact single acting, pull type cylinder series. |
|---|---|
| 40 | 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 ATQ Single Acting Thin Cylinder ATQ40X20B Is Used
CNC Fixture Clamp Release
Retracts a mechanical pull-pin to unseat a workpiece clamp on a machining center when air is applied, relying on the spring to safely re-engage the hold.
Package Deflector Arm
Draws back a sorting gate on a packaging line to allow carton passage, with the internal spring guaranteeing the gate extends back to the blocking position.
Tensioning Mechanism
Cycles a belt or cable tensioner in a textile machine, using the powered retract stroke to relieve tension for maintenance or load adjustments.
Is the Airtac ATQ Single Acting Thin Cylinder ATQ40X20B the Right Cylinder?
For lighter pulling tasks, the 32mm bore variant offers a 301.6N theoretical pull at 0.5MPa, whereas stepping up to the 50mm bore yields 824.6N. If your mechanism requires a travel distance beyond the 30mm maximum limit for this 40mm bore, you must transition to a double-acting ACQ cylinder. When ordering this pull-type actuator, confirm the 40mm bore, 20mm stroke, the male M14x1.5 rod thread, and the absence of the S magnet option.
Quick checklist
- ✓ Net pull 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 ATQ Single Acting Thin Cylinder ATQ40X20B FAQ
It delivers a theoretical pull of 527.8N at 0.5MPa and 738.9N at 0.7MPa before the return spring lowers the net output. Operating pressure is 0.2-1.0 MPa, and the maximum standard stroke is 30mm.
Loss of air pressure causes the internal spring to automatically extend the rod to its rest position. Impact deceleration is handled by fixed NBR elastomer bumpers, not adjustable air cushions.
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Standard models usually ship in 3-4 days.
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