Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke90 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75
The AirTAC ACQJ40X90-75 is a double-acting JIS compact cylinder with a 90mm full stroke and a 75mm adjustment window, allowing you to tune the extend end position anywhere from 15mm to 90mm directly on your machine. A threaded stop secured by a lock nut on the rod-end side sets this extend limit, while the retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This 40mm bore unit pushes 628.3N and pulls 527.8N at 0.5MPa, operating at speeds from 30 to 500mm/s. It features a 16mm piston rod, a PT1/8 port, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The body includes magnetic-switch grooves, though this specific configuration ships without a magnet. The external adjuster utilizes an M12x1.25 thread for precise positioning.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 90 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 ACQJ40X90-75
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 ACQJ40X90-75 Is Used
Machining Fixture Stops
Dial in the exact clamping extension on a CNC machining fixture without machining new spacer blocks when raw material dimensions vary slightly.
Packaging Changeover
Rapidly reposition a product-guiding flap or sealing head on a packaging line during format changeovers by turning the external stopper nut.
Prototype End Positions
Safely test trial extend endpoints on new laboratory automation equipment, finding the optimal reach before committing to a hard-coded stroke length.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75 the Right Cylinder?
If you do not need to alter the extend endpoint, a fixed-stroke ACQ cylinder provides the exact same 628.3N push force at 0.5MPa in a simpler package. When sizing up or down, a 32mm bore yields 402.1N push, while a 50mm bore provides 981.8N push at the same pressure. To order this adjustable variant correctly, confirm the 40mm bore, 90mm full stroke, 75mm window, female rod-end thread, and whether you require the S magnet option for sensor activation.
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 ACQJ40X90-75 FAQ
This 40mm bore cylinder delivers a push force of 628.3N and a pull force of 527.8N at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The usable extend range is 15-90mm, created by the 90mm full stroke minus the 75mm adjustment window.
No, the external M12x1.25 threaded stop only limits the extend stroke length, meaning the force remains identical to a standard ACQ. The cylinder relies on fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions, so you may need an external shock absorber for high-energy loads. Note that this model does not include a sensor magnet.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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