Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75S 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 ACQJ32X125-75S
The ACQJ32X125-75S is a double-acting JIS compact cylinder with an external extend stop, allowing you to fine-tune the forward end position directly on the machine without swapping parts. This long-stroke, made-to-order variant provides a 125mm total stroke with a 75mm adjustment window, yielding a usable forward travel range of 50-125mm. The return stroke remains fixed at its original length. An M12x1.25 locknut and threaded screw mechanism manages the extension limitation.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this bore: 402.1N push and 301.6N pull at 0.5MPa. The unit features fixed NBR elastomer bumpers at both ends for end-of-travel deceleration rather than adjustable air cushions. Equipped with a piston magnet (-S), it supports both reed and solid-state electronic sensors via its integrated mounting grooves. Operating speed spans 30-500mm/s across a 0.15-1.0MPa pressure range.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75S |
|---|---|
| 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 ACQJ32X125-75S
| 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 ACQJ32X125-75S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC milling fixture during new product setup, tweaking the 50-125mm forward travel to accommodate varying raw part thicknesses without disassembling the tooling.
Packaging Diverter Arms
Adjust the pusher stroke on a packaging line diverter to handle different carton widths on the fly, ensuring positive redirection without overtraveling into the main product flow.
Assembly Press Positioning
Set precise trial end positions on a light-duty assembly press, utilizing the external M12x1.25 adjuster to find the optimal pressing depth before locking down the nut for production runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-75S the Right Cylinder?
When sizing this 32mm bore actuator, consider the next sizes down and up: a 25mm bore yields 245.4N push at 0.5MPa, while a 40mm bore provides 628.3N. If your application requires a fixed 125mm reach without on-the-fly adjustments, a standard ACQ32X125 will suffice and likely ship faster. To order this adjustable version correctly, confirm the 32mm bore, 125mm full stroke, 75mm window, the -S magnet option, and the default female M8x1.25 rod-end thread. Note that exceeding the 100mm standard stroke maximum for this bore classifies it as a long-stroke configuration.
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 ACQJ32X125-75S FAQ
This 32mm bore cylinder has a 125mm full stroke with a 75mm adjustable window, giving a usable forward range of 50-125mm. Theoretical force matches 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 threaded screw with a lock nut physically limits how far the rod extends, shortening the forward stroke without altering piston area, so force remains unchanged. The retract stroke is unaffected. Deceleration is handled by fixed NBR elastomer bumpers, not adjustable air cushions, and the -S magnet works with reed or solid-state sensors.
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 ACQJ32X125-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.