Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20SB 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 ACQJ32X25-20SB
The AirTAC ACQJ32X25-20SB is a double-acting JIS compact cylinder featuring an external M12x1.25 threaded stop and lock nut to fine-tune the extend end position. With a 25mm full stroke and a 20mm adjustment window, the usable extend range spans 5 to 25mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore, delivering 402.1N push and 301.6N pull at 0.5MPa. This SB configuration includes a male M14x1.5 rod end for direct load coupling and a built-in piston magnet for position sensing. Fixed NBR elastomer bumpers absorb impact at both ends, operating reliably from -20 to 70C at 30-500mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20SB |
|---|---|
| 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 ACQJ32X25-20SB
| 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 ACQJ32X25-20SB Is Used
Machining Fixture Clamps
Dial in the exact clamping extension on a CNC fixture without machining custom spacers, accommodating different raw casting widths.
Packaging Product Changeover
Rapidly adjust the extend end position for a new carton size on a packaging line by turning the external stop screw.
Assembly Press Trial Stops
Safely test intermediate end positions during light assembly press setups before finalizing the mechanical stroke length.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20SB the Right Cylinder?
Choosing this 32mm bore provides 402.1N push at 0.5MPa, sitting between the 20mm bore (157.1N push) and the 40mm bore (628.3N push). If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 25mm full stroke, 20mm adjuster window, PT1/8 port, plus the S magnet and B male M14x1.5 rod end 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 ACQJ32X25-20SB FAQ
The usable extend range is 5-25mm (25mm full stroke minus the 20mm window). 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 port size is PT1/8.
No, the external M12x1.25 stop only limits how far the rod extends, meaning the retract stroke is unaffected. Force remains identical to a standard ACQ because the piston area is unchanged. Fixed elastomer bumpers handle end-of-stroke deceleration, and the -S magnet works with reed or solid-state 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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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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