Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75SB 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 ACQJ40X75-75SB
The AirTAC ACQJ40X75-75SB is a double-acting JIS compact cylinder with a 75mm total stroke and a 75mm adjustable extend window, allowing you to set the forward end position anywhere from 0 to 75mm. An external M12x1.25 threaded stop with a lock nut restricts how far the rod travels outward, while the retract stroke remains fixed. Because the piston area is unaltered, output force equals that of a standard ACQ unit.
This model includes a male M14x1.5 piston rod end for direct load coupling and a built-in magnet (-S) for position sensing. It pushes with 628.3N at 0.5MPa and 879.6N at 0.7MPa, peaking at 128kgf. Fixed NBR elastomer bumpers absorb impact at both ends, and the PT1/8 port manages pneumatic supply.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75SB |
|---|---|
| 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 ACQJ40X75-75SB
| 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 ACQJ40X75-75SB Is Used
Machining Clamp Tuning
Dial in the exact forward clamping reach on a CNC fixture during initial setup without machining custom spacers.
Product Changeover Stops
Quickly reposition the extend limit to accommodate varying package heights or part profiles on a packaging line.
Prototype Press Testing
Safely test trial end positions and compression depths on laboratory equipment before finalizing a mechanical design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75SB the Right Cylinder?
If your application requires less thrust, the 32mm bore variant provides 402.1N push at 0.5MPa, whereas stepping up to a 50mm bore yields 981.8N for heavier loads. If the forward end position never changes, a fixed-stroke ACQ cylinder is simpler and eliminates the need for stop adjustment. When ordering this adjustable version, confirm the 40mm bore, 75mm total stroke, 75mm window, male rod thread, and magnet 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 ACQJ40X75-75SB FAQ
At 0.5MPa it provides 628.3N push and 527.8N pull, increasing to 879.6N push at 0.7MPa, with a maximum push of 128kgf. The full stroke is 75mm with a 75mm window, giving a usable extend range of 0-75mm. The port is PT1/8, the male rod end is M14x1.5, and the external adjuster thread is M12x1.25.
No, the external stop alters only the extend length, not the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration, and the -S magnet works with reed or solid-state switches. Note that it will not hold a load on air loss; use an external rod lock for fail-safe positioning.
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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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