Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke25 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB
The AirTAC ACQJ40X25-10SB is a double-acting JIS compact cylinder with a 25mm full stroke and a 10mm external extend-stop window. By turning the M12x1.25 adjuster screw and locking the nut, you set the usable extend range from 15mm up to 25mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, output force matches a standard ACQ exactly: 628.3N push and 527.8N pull at 0.5 MPa.
This unit includes a male M14x1.5 rod-end thread (-B) for direct load coupling and a piston magnet (-S) for position sensing. The sensor grooves accept both reed and solid-state electronic switches. Travel deceleration relies on a fixed NBR elastomer bumper at each end. Operating pressure spans 0.15 to 1.0 MPa, with a PT1/8 port and a 16mm diameter rod.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (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 ACQJ40X25-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X25-10SB Is Used
Machining Fixture Stops
Dial in the extend position from 15 to 25mm on a CNC machining fixture to accommodate raw part tolerances without machining new spacer blocks.
Packaging Changeover
Adjust the rod extension during product format changeovers on a packaging line, switching stop distances rapidly for different carton sizes.
Assembly Press Positioning
Set trial end positions on an electronic assembly press, tweaking the 10mm window to find the exact contact depth before finalizing the cycle.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10SB the Right Cylinder?
If you need less thrust, the 32mm bore yields 402.1N push at 0.5 MPa, whereas the 50mm bore provides 981.8N if your fixture demands more power. Choose this 40mm bore when your setup requires roughly 628.3N push alongside precise 15-25mm extend tuning. A fixed-stroke ACQ is sufficient if the end position never varies. To order, confirm the 40mm bore, 25mm full stroke, 10mm window, magnet, and male rod thread. Note that a plain compact cylinder drifts on air loss; add an external rod lock for fail-safe holding.
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 ACQJ40X25-10SB FAQ
The usable extend range is 15-25mm (25mm full stroke minus the 10mm window). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
An external M12x1.25 threaded screw with a lock nut limits the extend length without altering piston area, so thrust remains unchanged. The retract stroke is unaffected. Deceleration uses fixed NBR elastomer bumpers, and the included magnet works with reed or electronic switches.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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