Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30S 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 ACQJ32X125-30S
The AirTAC ACQJ32X125-30S is a double-acting, JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. It features a 125 mm total stroke, but the external adjuster allows you to fine-tune the usable extend range down to 95 mm without swapping parts. The retract stroke remains completely unaffected by this mechanism. As a long-stroke made-to-order variant, the 125 mm travel exceeds the standard 100 mm maximum for this 32 mm bore.
Because the adjuster only restricts travel length and leaves piston area untouched, output force is identical to a standard ACQ of the same bore. You get 402.1 N push and 301.6 N pull at 0.5 MPa, rising to 562.9 N push at 0.7 MPa, with a maximum push capacity of 82 kgf at 1.0 MPa. The unit includes a -S piston magnet for position sensing and relies on a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30S |
|---|---|
| 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 ACQJ32X125-30S
| 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 ACQJ32X125-30S Is Used
Machining Fixture Changeover
Dial in the extend stop from 95 to 125 mm on a CNC lathe loader when swapping part families, avoiding the need to machine custom spacers.
Carton Sealing Tamping
Adjust the tamping head reach on a packaging line to accommodate varying box heights without altering the retract stroke or reprogramming the PLC.
Assembly Press Stroke Setup
Fine-tune the extend position on an assembly press during initial tooling trials to find the exact engagement depth before locking the nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-30S the Right Cylinder?
If 125 mm of travel is unnecessary, dropping to the adjacent 25 mm bore yields 245.4 N push at 0.5 MPa, whereas stepping up to a 40 mm bore provides 628.3 N push. A fixed-stroke ACQ suffices if your end position never varies between setups. When ordering, verify the 32 mm bore, 125 mm total stroke, -30 mm window, -S magnet, and default female M8x1.25 rod-end thread.
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 ACQJ32X125-30S FAQ
The usable extend range is 95-125 mm (125 mm full stroke minus up to 30 mm), while the retract stroke is unaffected. Force equals a standard ACQ: 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.
An external M12x1.25 threaded stop with a lock nut limits the extend length, changing only the travel distance without altering piston area or force. The cylinder uses fixed NBR elastomer bumpers for deceleration, not adjustable air cushions. The -S magnet works with reed or electronic solid-state switches, but a plain ACQ does not hold its load on air loss; use an external rod lock for fail-safe holding.
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Genuine AirTAC parts produced by AirTAC factory.
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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