Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-20B 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 ACQJ32X125-20B
The ACQJ32X125-20B is a double-acting JIS compact cylinder engineered for precise extend-end positioning. It features a 125 mm full stroke and an external threaded stop with a lock nut, allowing you to trim the forward travel by up to 20 mm. This yields a usable extend range of 105 to 125 mm, while the retract stroke remains completely unaffected. Equipped with a male M14x1.5 piston rod end, it couples directly to your load.
Because the adjuster only restricts travel length and not the piston face area, output force stays identical to a standard ACQ of this bore. Expect 402.1 N of push and 301.6 N of pull at 0.5 MPa. As a long-stroke made-to-order variant exceeding the 100 mm standard maximum for a 32 mm bore, it retains the compact riveted body, fixed NBR elastomer bumpers, and sensor grooves. Note that this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-20B |
|---|---|
| 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 ACQJ32X125-20B
| 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 ACQJ32X125-20B Is Used
Machining Fixture Clamping
Dial in exact clamping depth on multi-part machining fixtures without machining custom spacers, using the external stop to adapt for varying raw material thicknesses.
Assembly Line Changeover
Speed up product family changeovers on automated assembly lines by turning the threaded adjuster to set new extend end positions for different component heights.
Packaging Tucking Arms
Fine-tune the tucking arm extension on carton packaging machinery to handle distinct box formats, relying on the 105-125 mm usable range to prevent crushing.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-20B the Right Cylinder?
When sizing this unit, consider the ACQJ40X125-20B if your application requires greater thrust, delivering 628.3 N push at 0.5 MPa compared to this model's 402.1 N. Conversely, dropping to an ACQJ25X125-20B reduces push force to 245.4 N, which may be insufficient for heavier fixtures. If your end-position never varies, a fixed-stroke ACQ32X125 standard cylinder provides the same power in a simpler setup. To order this adjustable version correctly, confirm the 32 mm bore, 125 mm full stroke, 20 mm adjustment window, the male M14x1.5 rod thread, and the absence of the S magnet option.
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 ACQJ32X125-20B FAQ
This cylinder delivers 402.1 N push and 301.6 N pull at 0.5 MPa, and 562.9 N push at 0.7 MPa, with a maximum push force of 82 kgf at 1.0 MPa. The full stroke is 125 mm, and with the 20 mm adjustment window, the usable extend range is 105-125 mm.
The external threaded stop uses an M12x1.25 adjuster with a lock nut to mechanically limit how far the rod extends, shortening the forward stroke without altering the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not an adjustable air cushion. Note that this model lacks a magnet and will not hold its load if air pressure is lost.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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