Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S
The AirTAC ACQJ32X300-75S is a double-acting, single-rod JIS compact cylinder featuring an external threaded stop and lock nut that restricts the extend end position. This long-stroke, made-to-order variant provides a 300mm total stroke, but the integrated adjuster allows you to fine-tune the outward travel to any point within the 225 to 300mm usable range directly on the machine. The retract movement remains completely unaffected.
Because the adjuster only limits travel length without altering the piston area, the output force remains identical to a standard ACQ of the same bore, delivering 402.1N push at 0.5MPa. The cylinder body incorporates fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions. A built-in piston magnet (-S option) enables compatibility with both reed and electronic solid-state switches via the integrated mounting grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 300 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 ACQJ32X300-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 ACQJ32X300-75S Is Used
CNC Fixture Positioning
Dial in the exact extend endpoint for varying part heights on a CNC machining fixture without fabricating custom spacer rings.
Package Diverting Gates
Adjust the stroke length on conveyor sorting gates to accommodate different carton sizes during rapid product changeovers.
Palletizing Stops
Tune the extend stop distance on palletizing lines to safely buffer and locate mixed pallet load dimensions.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75S the Right Cylinder?
This 32mm bore configuration delivers a 0.5MPa push of 402.1N and a pull of 301.6N. If your application requires less thrust, stepping down to the 25mm bore yields a 245.4N push, whereas moving up to the 40mm bore provides a 628.3N push. A standard fixed-stroke ACQ cylinder is sufficient if your extend endpoint never requires on-the-fly adjustments. When ordering, verify the 300mm full stroke, the 75mm adjustment window, the -S magnet option, the PT1/8 port, 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 ACQJ32X300-75S FAQ
The usable extend range is 225 to 300mm (300mm full stroke minus the 75mm window), and the retract stroke is unaffected. The force is identical to 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.
The external M12x1.25 threaded stop with lock nut only changes the extend stroke length; it does not reduce the piston area or force. Deceleration is handled by fixed elastomer bumpers at each end, not adjustable air cushions. For high-speed or high-energy loads, an external shock absorber is recommended.
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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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