Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke125 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S
The ACQJ32X125-40S is a double-acting JIS compact cylinder featuring an external extend stop. A threaded rod with a lock nut allows you to fine-tune the extend end position on the machine, providing a usable extension range of 85-125mm from the 125mm full stroke. Retraction travel remains at the full 125mm. This 125mm stroke exceeds the 100mm standard maximum for a 32mm bore, classifying it as a long-stroke made-to-order variant.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore. At 0.5MPa it yields 402.1N push and 301.6N pull, while operating pressure spans 0.15-1.0MPa. The Ø16mm piston rod uses an M8x1.25 female thread end. Deceleration relies on a fixed NBR elastomer bumper at each end, and the built-in magnet (-S) supports reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 125 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 ACQJ32X125-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 ACQJ32X125-40S Is Used
Product Changeover Stops
Quickly modify the extend endpoint within the 85-125mm window on packaging lines when switching to a different carton size, avoiding parts replacement.
Trial End Positions
Dial in the exact clamping depth on test fixtures using the M12x1.25 external adjuster thread, finding the optimal contact point without reprogramming motion controllers.
Setup-Varying Assemblies
Adapt end-of-stroke stops on automated assembly presses for varying part heights, utilizing the fixed elastomer bumper to decelerate the rod at the extremes.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40S the Right Cylinder?
For sizing context: a 25mm bore provides 245.4N push, while stepping up to a 40mm bore offers 628.3N at 0.5MPa. If your extend target is fixed and never requires on-machine adjustment, a standard ACQ32X125 cylinder is sufficient. When ordering this adjustable model, confirm the 32mm bore, 125mm full stroke, 40mm window, -S magnet, and female rod thread. The port size is PT1/8.
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 ACQJ32X125-40S FAQ
This 32mm bore cylinder has a 125mm full stroke with a -40mm adjustable window, giving a usable extend range of 85-125mm. Force output matches 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 external M12x1.25 threaded stop with lock nut limits only the extend length, leaving retraction unaffected. It does not alter piston area, so force remains identical to a standard cylinder. The fixed NBR bumper decelerates the rod near stroke ends, but a plain ACQ-type does not hold its load on air loss; for fail-safe holding, use an external rod lock.
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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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