Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke25 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B
The AirTAC ACQJ32X25-20B is a double-acting JIS compact cylinder with a 32mm bore and a 25mm full stroke. An external M12x1.25 threaded stop and lock nut restricts the extend end position, yielding a usable extend range of 5 to 25mm. You can dial in the exact endpoint directly on the machine without machining new components. The retract stroke remains completely unaffected.
Because the adjuster only limits travel length and not piston area, output force equals a standard ACQ of this size: 402.1N push and 301.6N pull at 0.5MPa. The unit relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion. It features a PT1/8 port, a 16mm rod, and a male M14x1.5 rod-end thread (-B) for direct load coupling. Note this variant ships without a magnet, though the body retains sensor grooves for optional switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 25 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 ACQJ32X25-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 ACQJ32X25-20B Is Used
Machining Fixture Clamps
Dial in the clamping reach on a milling fixture to accommodate raw castings of varying widths without fabricating custom spacer blocks.
Packaging Machine Changeover
Rapidly reset the extend end stop during product format changes on a cartoner, ensuring the sealing jaw hits the correct carton depth.
Assembly Press Stations
Establish precise press-in depths for bearing inserts on a manual assembly line, tweaking the 5-25mm window until the fit is perfect.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20B the Right Cylinder?
If 402.1N of push at 0.5MPa is insufficient, step up to the 40mm bore (628.3N push), or drop to the 25mm bore (245.4N push) if your load is lighter. If you require a fixed 25mm extend position and do not need on-the-fly adjustment, a standard ACQ32X25 will suffice. To order this adjustable version correctly, confirm the 32mm bore, 25mm full stroke, 20mm window, male rod thread (-B), and that no magnet is required.
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 ACQJ32X25-20B FAQ
It delivers 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. The full stroke is 25mm with a 20mm window, allowing an adjustable extend range of 5 to 25mm.
The external M12x1.25 threaded stop with lock nut mechanically limits how far the rod extends, leaving retract travel untouched. It does not alter piston area, so force remains identical to a standard ACQ32. The cylinder uses fixed elastomer bumpers, not a brake, so it will drift and drop the load on air loss; use an external rod lock 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 ACQJ32X25-20B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.