Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20S 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 ACQJ32X25-20S
The AirTAC ACQJ32X25-20S 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 limits the extend end position, providing a usable extend range of 5-25mm. The retract stroke remains unaffected by this adjustment. Because the piston area is unchanged, output force is identical to a standard ACQ of this bore.
Operating at 0.15-1.0 MPa, this unit delivers 402.1N push and 301.6N pull force at 0.5 MPa. It features a 16mm rod, PT1/8 porting, and fixed elastomer bumpers at both ends for end-of-stroke deceleration. The integrated -S magnet works seamlessly with reed or electronic solid-state switches housed in the body grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20S |
|---|---|
| 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 ACQJ32X25-20S
| 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 ACQJ32X25-20S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture during setup, allowing operators to shorten the extend stroke from 25mm down to 5mm for varying part geometries.
Product Changeover Diverter
Quickly reposition a conveyor routing flap by twisting the external stopper nut, adapting the actuator end point for different package sizes without swapping hardware.
Assembly Press Trial
Safely test engagement depths on an automated assembly press by starting at a 5mm extend stroke and gradually lengthening the travel to find the optimal seating force.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X25-20S the Right Cylinder?
If 301.6N pull at 0.5 MPa is insufficient, stepping up to a 40mm bore provides 527.8N pull, while dropping to a 25mm bore reduces the push force to 245.4N. A fixed-stroke ACQ is adequate if your extend end position never requires modification. For this adjustable model, confirm the 32mm bore, 25mm full stroke, 20mm adjuster window, the -S magnet option, and the female M8x1.25 rod-end thread.
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 ACQJ32X25-20S FAQ
The usable extend range is 5-25mm (a 25mm full stroke shortened by up to 20mm). Force is identical to a standard ACQ: 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, with a maximum push of 82 kgf at 1.0 MPa.
The M12x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, changing only the stroke length. The retract stroke is unaffected. Deceleration is handled by fixed elastomer bumpers, not an adjustable air cushion, so external shock absorbers are recommended for high-speed loads.
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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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