Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B
The AirTAC ACQJ32X75-50B is a double-acting JIS compact cylinder featuring a 32mm bore and a 75mm full stroke. An external M12x1.25 threaded stop with a lock nut limits the extend end position, allowing you to tune the usable extend range from 25mm up to 75mm directly on the machine. The retract stroke remains unaffected, and the output force stays identical to a standard ACQ because the piston area is unchanged. This variant includes a male M14x1.5 rod-end thread and uses a PT1/8 port.
Operating between 0.15 and 1.0 MPa, this single-rod unit delivers a push force of 402.1N and a pull force of 301.6N at 0.5 MPa. It relies on fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. The body features integrated magnetic-switch grooves, though this specific SKU ships without a magnet. For high kinetic energy loads, adding an external shock absorber is advised.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 75 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M8×1.25 (F) / M14×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B Is Used
Machining Fixture Stops
Dial in the extend position from 25 to 75mm on a CNC machining fixture to accommodate raw part size variations without machining new stop spacers.
Packaging Changeover
Rapidly adjust the end-of-stroke position during packaging line product changeovers by turning the external M12x1.25 stop screw to set new carton push depths.
Assembly Press Trials
Safely trial different extend end positions on an automated assembly press, fine-tuning the stroke window on the equipment to find the optimal pressing depth.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B the Right Cylinder?
Selecting this 32mm bore provides a push force of 402.1N at 0.5 MPa, sitting between the 20mm bore (157.1N push) and the 40mm bore (628.3N push). If your extend position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 75mm full stroke, the 50mm adjustment window, the male M14x1.5 rod thread, and the PT1/8 port. Remember that a plain compact cylinder drifts if air pressure is lost; use an external rod lock or pilot-operated check valve for fail-safe load holding.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ 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 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-50B FAQ
This 32mm bore cylinder delivers a push force of 402.1N and a pull force of 301.6N at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82kgf at 1.0 MPa. The 75mm full stroke can be shortened by up to 50mm, providing a usable extend range of 25-75mm.
The external M12x1.25 threaded stop with lock nut physically limits how far the rod extends, shortening the stroke length only. It does not alter the piston area, so the output force remains identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers, not an adjustable air cushion.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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