Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40S 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 ACQJ40X80-40S
The AirTAC ACQJ40X80-40S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut on the rod-end side. This mechanism lets you fine-tune the extend end position directly on the machine, providing a usable extend range of 40 to 80 mm from the 80 mm full stroke. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays the same, output force is identical to a standard ACQ of this bore, delivering 628.3 N push at 0.5 MPa. The cylinder uses a 16 mm rod, a PT1/8 port, and fixed NBR elastomer bumpers at both ends for end-of-travel deceleration. Equipped with a piston magnet (-S), it supports both reed and solid-state electronic switches via its integrated grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40S |
|---|---|
| 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 ACQJ40X80-40S
| 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 ACQJ40X80-40S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC milling fixture during part changeovers, using the external M12x1.25 adjuster to hit the new end position without swapping cylinders.
Assembly Line Product Changeover
Adapt a pressing station on an automated assembly line for different product heights, shortening the extend stroke by up to 40 mm to accommodate new component dimensions rapidly.
Carton Sealing Tensioning
Fine-tune the sealing head extension on a packaging conveyor to match varying carton sizes, relying on the fixed elastomer bumper to absorb the stop impact at high cycle rates.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40S the Right Cylinder?
If you need slightly less thrust, the bore 32 model provides 402.1 N push at 0.5 MPa, whereas stepping up to the bore 50 version yields 981.8 N. Choose this ACQJ40X80-40S when your fixture setup or product changeovers require varying extend lengths within the 40 to 80 mm window. If a fixed 80 mm extend position always suffices, a standard non-adjustable ACQ cylinder is the simpler choice. To order, confirm the 40 mm bore, 80 mm full stroke, 40 mm window, the -S magnet option, and the default female M8x1.25 rod-end thread.
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 ACQJ40X80-40S FAQ
This cylinder delivers 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 40 to 80 mm, achieved by shortening the 80 mm full stroke by up to a 40 mm window.
No, the external M12x1.25 threaded stop changes only the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration, and because it is a plain air cylinder, it will not hold a load on air loss; for fail-safe load holding, add an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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