Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50 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 ACQJ40X80-50
The AirTAC ACQJ40X80-50 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts how far the rod extends. With a full stroke of 80mm and a 50mm adjustment window, you can fine-tune the usable extend range from 30mm up to 80mm directly on the machine. The retract stroke remains completely unaffected by this mechanism. Because the piston area stays the same, output force is identical to a standard ACQ of this bore size.
At 0.5 MPa operating pressure, this 40mm bore generates 628.3N of push force and 527.8N of pull force, peaking at 128 kgf maximum push at 1.0 MPa. The unit incorporates fixed elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable pneumatic cushions. It uses a PT1/8 port and a 16mm rod with a female M8x1.25 rod-end thread. Although this specific configuration ships without a magnet, the body retains integrated sensor grooves for mounting reed or solid-state switches if needed later.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50 |
|---|---|
| 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 ACQJ40X80-50
| 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 ACQJ40X80-50 Is Used
Modular Fixture Positioning
Adjust the extend endpoint within the 30-80mm range to accommodate different material thicknesses on a single machining fixture without machining new stop spacers.
Packaging Changeover Stops
Rapidly reconfigure the extend stroke for varying carton sizes on a packaging line by turning the external M12x1.25 adjuster nut to hit the new exact sealing or folding position.
Trial End Positions
Dial in the precise extend distance during machine commissioning or prototype runs, testing multiple end positions on the fly before locking the nut for production.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50 the Right Cylinder?
If your application requires less push force at 0.5 MPa, stepping down to a 32mm bore yields 402.1N push and 301.6N pull, while stepping up to a 50mm bore provides 981.8N push and 824.6N pull. Choose this adjustable model specifically when you need on-the-fly end-position changes for varying product dimensions; a fixed-stroke ACQ is sufficient if the extend position never varies. When ordering, verify the 40mm bore, 80mm full stroke, 50mm window, female rod thread, and whether you need the -S magnet option for switch detection.
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 ACQJ40X80-50 FAQ
The usable extend range is 30-80mm (an 80mm full stroke shortened by up to a 50mm window). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend distance without altering the piston area, so force remains unchanged. The retract stroke is unaffected, and the cylinder relies on fixed elastomer bumpers for deceleration rather than adjustable air cushions.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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