Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40 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 ACQJ32X125-40
The AirTAC ACQJ32X125-40 is a double-acting JIS compact cylinder featuring a 125mm stroke and a 40mm external adjustment window. An external M12x1.25 threaded stop with a lock nut lets you set the extend end position anywhere in an 85 to 125mm usable range directly on your equipment. The retract stroke remains completely unaffected by this mechanism. This unit is a long-stroke, made-to-order variant because the 125mm travel exceeds the standard 100mm maximum for a 32mm bore.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this size. At 0.5 MPa it generates 402.1N of push and 301.6N of pull, reaching a maximum push of 82kgf at 1.0MPa. The body uses a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion. It features a 16mm rod, a female M8x1.25 rod-end thread, and a PT1/8 port.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40 |
|---|---|
| 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 ACQJ32X125-40
| 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 ACQJ32X125-40 Is Used
Machining Fixture Positioning
Dial in the exact extend stop from 85 to 125mm on a CNC machining fixture without machining new spacers when raw part dimensions vary slightly.
Packaging Line Changeover
Rapidly adjust the extend end position during product format changeovers on a packaging line to accommodate different carton depths.
Assembly Press Trials
Safely test different extend end positions on an assembly press to find the optimal engagement depth before finalizing a hard mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40 the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: a 25mm bore yields 245.4N push at 0.5MPa, while a 40mm bore provides 628.3N. This 32mm bore hits a middle ground with 402.1N push, making it suitable when the 25mm lacks power but the 40mm is physically too large. If your equipment never requires end-position tuning, a fixed-stroke ACQ cylinder will suffice and cost less. For ordering, confirm the 32mm bore, 125mm full stroke, 40mm window, female rod thread, and note that this specific SKU ships without a magnet (no -S suffix) even though the body retains sensor grooves.
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 ACQJ32X125-40 FAQ
This 32mm bore cylinder delivers 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 usable extend range is 85-125mm, achieved by using the 40mm adjustment window to shorten the 125mm full stroke.
The external M12x1.25 threaded stop and lock nut mechanically limit how far the rod extends, shortening the stroke without changing the piston area or force. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. The cylinder will not hold a load if air pressure is lost; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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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