Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S
The AirTAC ACQJ40X75-40S is a double-acting JIS compact cylinder featuring an external extend-stop mechanism. A threaded adjuster with a lock nut restricts how far the rod travels outward, providing a usable extend range of 35 to 75 mm. The retract stroke remains at the full 75 mm distance and is completely unaffected by the stop. Because the 40 mm piston area stays constant, output force equals a standard ACQ, yielding 628.3 N push and 527.8 N pull at 0.5 MPa.
This unit includes an internal piston magnet for tracking position. The adjuster itself uses an M12x1.25 thread, while the standard female rod end features an M8x1.25 thread. Fixed NBR elastomer bumpers absorb impact at both stroke ends rather than adjustable pneumatic cushions. Operating pressure spans 0.15 to 1.0 MPa, and the body integrates grooves for mounting reed or solid-state sensors.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 75 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 ACQJ40X75-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 ACQJ40X75-40S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture without fabricating custom spacer plates for different part heights.
Carton Changeover
Quickly reset the pressing depth for varying package sizes on a packaging line by turning the external stop nut.
Assembly Press Tuning
Test and set precise insertion depths for bearing presses during prototype runs before finalizing the machine setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40S the Right Cylinder?
If your application only requires a fixed 75 mm extend distance, a standard ACQ40X75 cylinder is sufficient and more cost-effective. Choose this ACQJ variant when you need on-the-fly end-position tuning. For slightly lower force requirements, the bore 32 model provides 402.1 N push at 0.5 MPa. If you need more power, stepping up to the bore 50 version yields 981.8 N push at 0.5 MPa. When ordering, verify the 40 mm bore, 75 mm full stroke, 40 mm adjuster window, the S magnet option, and your preferred rod-end thread type.
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 ACQJ40X75-40S FAQ
The usable extend range is 35 to 75 mm (a 75 mm full stroke minus up to a 40 mm window). Force is identical to a standard ACQ bore 40: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
The M12x1.25 external threaded stop limits the extend length only; it does not alter piston area or force. Deceleration is handled by fixed NBR elastomer bumpers at each end, not adjustable air cushions. The built-in magnet works with both reed and solid-state switches.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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