Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB 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 ACQJ32X125-50SB
The AirTAC ACQJ32X125-50SB is a double-acting, single-rod JIS compact cylinder built for precise extend-stroke adjustment. It features an external M12x1.25 threaded stop with a lock nut, allowing you to fine-tune the extend end position anywhere between 75mm and 125mm directly on your equipment. The retract stroke remains completely unaffected by this mechanism. This unit includes a built-in piston magnet (-S) for electronic or reed switches and a male M14x1.5 rod-end thread (-B) for direct load coupling.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 402.1N push and 301.6N pull at 0.5MPa. This 125mm stroke variant is a made-to-order long-stroke version, exceeding the standard 100mm maximum for 32mm bores. It uses a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB |
|---|---|
| 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 ACQJ32X125-50SB
| 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 ACQJ32X125-50SB Is Used
Machining Fixture Stops
Dial in the exact extend position from 75 to 125mm on CNC machining fixtures when raw material thickness varies between production runs.
Assembly Line Changeover
Rapidly reposition the extend end-stop during product family changeovers on automated assembly lines without swapping out cylinder hardware.
Prototype Positioning
Test multiple extend end positions on new packaging or sorting machinery prototypes to find the optimal mechanical displacement distance.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: a 25mm bore provides 245.4N push at 0.5MPa, while a 40mm bore yields 628.3N. This 32mm unit hits a solid middle ground at 402.1N. If your end position never varies, a fixed-stroke ACQ cylinder is simpler and suffices. To order correctly, confirm the 32mm bore, 125mm full stroke, 50mm adjustable window, and the required -S magnet and -B male rod thread options.
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 ACQJ32X125-50SB FAQ
The usable extend range is 75-125mm (125mm full stroke minus the 50mm window). Force is identical to a standard ACQ: 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.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke; the retract stroke is unaffected. The fixed NBR elastomer bumper decelerates the piston near stroke end, but a plain ACQ-type cylinder will not hold its load on air loss, so an external rod lock is needed for fail-safe holding.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.