Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20
The AirTAC ACQJ32X300-20 is a double-acting, single-rod JIS compact cylinder built for long-stroke applications. It features an external threaded stop with a lock nut on the extend end, allowing you to fine-tune the usable extend stroke from 280mm up to the full 300mm directly on the machine. The retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore, delivering 402.1N push at 0.5MPa. This made-to-order variant exceeds the 100mm standard stroke maximum for bore 32, extending up to the 300mm long-stroke range.
This model incorporates a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion. The body retains integrated magnetic-switch grooves, though this specific unit ships without a piston magnet. Operating pressure spans 0.15-1.0MPa, and the 16mm piston rod features a default female M8x1.25 thread end. Note that a plain compact cylinder will not hold its load on air loss; for fail-safe holding, an external rod lock or pilot-operated check valve is recommended.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 300 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 ACQJ32X300-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 ACQJ32X300-20 Is Used
Machining Fixture Stops
Dial in the exact 280-300mm extend position on a CNC machining fixture without machining new stop spacers during product changeovers.
Conveyor Diversion Gates
Regulate the extend reach of a sorting gate on a packaging conveyor line to accommodate varying box widths on the fly.
Assembly Press Positioning
Set precise end-stops on an assembly press for trial runs, ensuring components are seated perfectly before finalizing the mechanical limits.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20 the Right Cylinder?
When sizing this bore, stepping down to a 25mm version yields 245.4N push at 0.5MPa, while stepping up to a 40mm bore provides 628.3N push at 0.5MPa. If your application requires a fixed 300mm extend position without any on-machine adjustment window, a standard ACQ32X300 cylinder would suffice. To order this adjustable variant correctly, confirm the 32mm bore, 300mm full stroke, 20mm adjuster window, PT1/8 port, and the default female M8x1.25 rod-end thread.
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 ACQJ32X300-20 FAQ
The usable extend range is 280-300mm (300mm full stroke minus the 20mm window). Force is identical to a standard ACQ: 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The retract stroke is unaffected.
An external M12x1.25 threaded stop with a lock nut limits the extend distance without changing the piston area or force. Fixed NBR elastomer bumpers decelerate the rod at both ends. Because it lacks an air cushion or brake, the rod will drift on air loss, requiring an external rod lock for fail-safe holding.
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1-Year Warranty
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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