Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75B 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 ACQJ32X125-75B
The ACQJ32X125-75B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get a usable extend range of 50-125 mm because the 75 mm adjustment window shortens the 125 mm full stroke. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays the same, the output force equals a standard ACQ of this bore, delivering 402.1 N push and 301.6 N pull at 0.5 MPa. This made-to-order long-stroke variant exceeds the 100 mm standard maximum for a 32 mm bore. It features a male M14x1.5 rod end that couples directly to your load, plus fixed NBR elastomer bumpers for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75B |
|---|---|
| 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 ACQJ32X125-75B
| 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 ACQJ32X125-75B Is Used
Machining Fixture Tuning
Dial in the exact clamping reach on a CNC mill without machining custom spacers, shortening the extend stroke within the 50-125 mm window.
Product Changeover Stops
Adapt a packaging line end-stop position rapidly when switching to a different carton size using the external M12x1.25 adjuster.
Prototype Positioning
Test various end-of-travel locations on an assembly rig to find the optimal motion profile before finalizing the design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75B the Right Cylinder?
If you need less force, the 25 mm bore offers 245.4 N push at 0.5 MPa, while stepping up to the 40 mm bore yields 628.3 N. A fixed-stroke ACQ suffices if your extend position never requires tweaking. To order, confirm the 32 mm bore, 125 mm full stroke, 75 mm window, male M14x1.5 rod thread, and no magnet.
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 ACQJ32X125-75B FAQ
The usable extend range is 50-125 mm (125 mm full stroke minus the 75 mm window). It provides 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
No, the adjuster changes the extend stroke length only, so force remains identical to a standard ACQ. The rod drifts on air loss since the fixed elastomer bumper only decelerates near the stroke end; use an external rod lock for fail-safe holding.
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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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