Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke125 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S
The ACQJ40X125-100S is a double-acting JIS compact cylinder featuring an external adjuster screw and lock nut that limits the extend travel. With a full 125mm stroke and a 100mm reduction window, the usable extend range spans 25 to 125mm. Retract distance remains fixed. This long-stroke configuration exceeds the 100mm standard maximum for this 40mm bore, making it a made-to-order item.
Output force stays identical to a standard ACQ of equal bore because the piston area is unchanged by the stopper. The unit pushes 628.3N and pulls 527.8N at 0.5MPa. It includes a 16mm rod, a female M8x1.25 rod-end thread, and an M12x1.25 external adjuster thread. Fixed NBR elastomer bumpers absorb impact at both ends, and the -S magnet enables tracking via reed or solid-state sensors.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ40X125-100S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X125-100S Is Used
Machining Fixture Stops
Dial in the exact extend position between 25 and 125mm on a CNC load fixture without machining new hard stops.
Packaging Line Diverters
Modify the extend length of a sorting gate during carton size changeovers while keeping the retract stroke constant.
Assembly Press Tuning
Test multiple engagement depths on an electronic board press by adjusting the external M12x1.25 threaded stop on the machine.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X125-100S the Right Cylinder?
For lower force needs, the 32mm bore yields 402.1N push at 0.5MPa, whereas stepping up to a 50mm bore provides 981.8N. Choose this 40mm unit when your setup requires roughly 628.3N of push force and on-the-fly extend shortening. If your end position never varies, a fixed-stroke ACQ40X125 is simpler. Confirm your ordering essentials: 40mm bore, 125mm full stroke, 100mm window, magnet S, and female rod 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 ACQJ40X125-100S FAQ
It delivers 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 125mm with a 100mm window, giving a usable extend range of 25-125mm. Retract travel is unaffected.
An external M12x1.25 threaded screw with a lock nut limits extend travel, allowing on-site tuning without replacing parts. The adjustment alters stroke length only, so force remains identical to a standard ACQ40. Fixed elastomer bumpers handle end-of-stroke deceleration, and the -S magnet works with reed or solid-state switches.
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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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