Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30 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 ACQJ40X80-30
The AirTAC ACQJ40X80-30 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend stroke from 50 mm up to the full 80 mm directly on the machine without swapping parts. The retract stroke remains a fixed 80 mm and is unaffected by the adjuster.
Because the piston area is unchanged, force output is identical to a standard ACQ of this bore, delivering 628.3 N push at 0.5 MPa. The 40 mm bore uses a 16 mm rod, PT1/8 port, and an M12x1.25 adjuster thread. It features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and the body includes sensor grooves for adding reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30 |
|---|---|
| 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 ACQJ40X80-30
| 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 ACQJ40X80-30 Is Used
Machining Fixture Clamps
Dial in the exact 50-80 mm clamping reach on machining fixtures to accommodate varying raw material thicknesses without manufacturing new spacer blocks.
Product Changeover Stops
Adjust the extend position of package routing stops on a conveyor line in seconds to handle different carton lengths during rapid product changeovers.
Assembly Press Positioning
Set trial end positions for pressing bearings on an assembly line, allowing operators to tweak the 30 mm window for delicate or varying insertion depths.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30 the Right Cylinder?
For lower force needs, the 32 mm bore provides 402.1 N push at 0.5 MPa, while stepping up to the 50 mm bore yields 981.8 N push. If your extend position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 40 mm bore, 80 mm full stroke, 30 mm adjuster window, female M8x1.25 rod-end thread, and whether a magnet or specific switch is needed.
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 ACQJ40X80-30 FAQ
The force is identical to a standard ACQ, providing 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 usable extend range is 50 to 80 mm, representing the 80 mm full stroke minus the 30 mm adjustable window.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend stroke, changing only the stroke length and not the force. The cylinder uses a fixed NBR elastomer bumper for deceleration, not an adjustable air cushion. It will not hold a load on air loss, so an external rod lock or pilot-operated check valve is required for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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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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