Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40 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 ACQJ40X80-40
The ACQJ40X80-40 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. You can fine-tune the outward travel anywhere within a 40-80 mm usable range (an 80 mm full stroke shortened by the 40 mm window) directly on your equipment without swapping parts. The retract movement remains completely unaffected.
Because the internal piston area stays the same, the output force equals a standard ACQ counterpart, delivering 628.3 N of push and 527.8 N of pull at 0.5 MPa. This 40 mm bore unit includes a 16 mm rod, PT1/8 porting, and fixed elastomer bumpers at both ends for compact shock absorption.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40 |
|---|---|
| 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 ACQJ40X80-40
| 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 ACQJ40X80-40 Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture during initial setup or when swapping out parts of varying heights.
Carton Sealing Tensioning
Adjust the sealing head downward pressure on a packaging line to accommodate different box sizes without changing cylinder hardware.
Assembly Press Trials
Find the optimal end position for pressing bearings on an assembly line by testing intermediate depths before locking the nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40 the Right Cylinder?
When sizing this unit, consider the adjacent bore options: the 32 mm version yields 402.1 N push, while the 50 mm version provides 981.8 N at 0.5 MPa. If your application requires a fixed outward reach every cycle without variation, a standard ACQ40X80 cylinder is sufficient. To order this adjustable model correctly, confirm the 40 mm bore, 80 mm full stroke, 40 mm window, female M8x1.25 rod thread, and whether you require the S magnet option for sensing.
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 ACQJ40X80-40 FAQ
This 40 mm bore cylinder provides 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 full stroke is 80 mm with a 40 mm adjustable window, allowing the extend range to be set anywhere from 40 to 80 mm.
No, the external M12x1.25 threaded stop only limits how far the rod extends, leaving the piston area unchanged so force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers for end-of-stroke deceleration rather than adjustable air cushions, and it requires an external rod lock to hold loads safely during air loss.
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Covers non-human-caused product damage.
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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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