Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30SB 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 ACQJ32X125-30SB
The AirTAC ACQJ32X125-30SB is a double-acting JIS compact cylinder with an external extend stop, allowing you to fine-tune the end position directly on your equipment without swapping parts. It features a 32mm bore, a male M14x1.5 rod end, and a built-in magnet for electronic or reed switches. Because the piston area remains constant, output force stays identical to a standard ACQ, delivering 402.1N push at 0.5 MPa.
This made-to-order long-stroke variant provides a 125mm total stroke, exceeding the 100mm standard maximum for this bore size. The external M12x1.25 adjuster screw with a lock nut shortens the forward travel by up to 30mm, yielding a usable extend range of 95-125mm, while the return stroke remains unaffected. It uses a PT1/8 port, carries a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and operates smoothly between 30 and 500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30SB |
|---|---|
| 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 ACQJ32X125-30SB
| 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 ACQJ32X125-30SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture during new product introduction or when switching material blanks.
Carton Sealing Turrets
Adjust the pressing height of a packaging turret on the fly to accommodate varied box profiles without changing hardware.
Assembly Press Trials
Set trial end positions for a light-duty assembly press, tweaking the 95-125mm forward travel to find the optimal insertion depth.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30SB the Right Cylinder?
If you need less thrust, the adjacent Ø25 bore yields 245.4N push at 0.5 MPa, whereas stepping up to the Ø40 bore provides 628.3N push. A fixed-stroke ACQ is sufficient if your end position never requires tweaking. To order this unit correctly, confirm the 32mm bore, 125mm full stroke, 30mm adjust window, the -S magnet, and the -B male M14x1.5 rod thread. Remember that a standard air cylinder drifts if air pressure is lost; for fail-safe load holding, install an external rod lock or pilot-operated check valve.
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 ACQJ32X125-30SB FAQ
The usable extend range is 95-125mm (a 125mm full stroke minus up to 30mm via the external stop). The output force is identical to a standard ACQ of the same bore: 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
An external M12x1.25 threaded screw with a lock nut limits the forward extension distance only; the retract stroke remains completely unaffected. The adjuster changes stroke length only, so the force is unchanged. End-of-stroke deceleration relies on a fixed NBR elastomer bumper at each end, not an adjustable air cushion.
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Genuine AirTAC parts produced by AirTAC factory.
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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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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