Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke80 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75
The AirTAC ACQJ40X80-75 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 5 mm up to the full 80 mm stroke directly on your machinery without swapping components. The retract stroke remains completely unaffected by this adjustment.
Because the internal piston area stays constant, output force is identical to a standard ACQ of the same bore, delivering 628.3 N push at 0.5 MPa. This unit features a 16 mm piston rod, PT1/8 porting, and a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. It ships without a magnet but retains built-in sensor grooves for adding reed or solid-state switches later.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 80 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 ACQJ40X80-75
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 ACQJ40X80-75 Is Used
Varying Fixture Setups
Dial in the extend stop between 5 and 80 mm to accommodate multiple part thicknesses on a single machining fixture without fabricating new spacers.
Product Changeover Stops
Rapidly reposition the external M12x1.25 adjuster to adapt end positions during packaging line format changes, minimizing downtime between product runs.
Trial End Positions
Test different clamping depths on assembly stations safely by limiting the extend stroke, relying on the fixed elastomer bumper to absorb impact energy.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-75 the Right Cylinder?
If you need less thrust, the adjacent ACQJ32 bore provides 402.1 N push at 0.5 MPa, whereas stepping up to the ACQJ50 yields 981.8 N for heavier loads. A fixed-stroke ACQ40 cylinder is sufficient if your end position never varies. When ordering this adjustable unit, verify the 40 mm bore, 80 mm full stroke, 75 mm window, female M8x1.25 rod thread, and confirm whether a magnet is needed since this configuration omits the -S option.
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 ACQJ40X80-75 FAQ
The push force is 628.3 N and pull is 527.8 N at 0.5 MPa, with 879.6 N push at 0.7 MPa and a maximum push of 128 kgf at 1.0 MPa. The 75 mm window allows a usable extend range of 5-80 mm, while the retract stroke remains fixed at the full 80 mm.
The M12x1.25 threaded adjuster with lock nut mechanically limits how far the rod extends, shortening the stroke without altering the piston area, so force stays identical to a standard ACQ. Deceleration relies on a fixed NBR bumper, not an adjustable air cushion, and the cylinder will not hold a load if air pressure is lost.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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