Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30S 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 ACQJ40X80-30S
The AirTAC ACQJ40X80-30S 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 stroke anywhere between 50 and 80 mm directly on your machinery without swapping parts, while the retract stroke remains completely unaffected. A 30 mm adjustment window provides excellent setup flexibility for changing production needs.
Because the piston area stays the same, the output force equals a standard ACQ of this bore, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. The unit includes a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Equipped with a built-in magnet (-S), it supports both reed and electronic solid-state magnetic switches via the integrated sensor grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30S |
|---|---|
| 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 ACQJ40X80-30S
| 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 ACQJ40X80-30S Is Used
Machining Fixture Stops
Dial in the extend position from 50 to 80 mm on milling fixtures to accommodate varying part lengths without manufacturing custom spacer blocks.
Packaging Changeover
Rapidly reposition the extend end stop during product format changes on packaging lines, using the lock nut to secure the new stroke depth.
Assembly Press Prototyping
Establish precise trial end positions for pressing operations, relying on the fixed elastomer bumper to absorb impact at high cycle speeds.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-30S the Right Cylinder?
If you need slightly less thrust, the ACQJ32 bore yields 402.1 N push at 0.5 MPa, whereas stepping up to the ACQJ50 bore provides 981.8 N. A fixed-stroke ACQ cylinder is sufficient if your end position never requires field adjustments. When ordering, verify the 40 mm bore, 80 mm full stroke, 30 mm adjuster window, the -S magnet option, and the default female M8x1.25 rod-end thread alongside the PT1/8 port.
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 ACQJ40X80-30S FAQ
The usable extend range is 50-80 mm (80 mm full stroke minus up to 30 mm). Force is identical to a standard ACQ40: push is 628.3 N and pull is 527.8 N at 0.5 MPa, push is 879.6 N at 0.7 MPa, and maximum push is 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke length only; it does not change the piston area, so force remains unchanged. The retract stroke is unaffected. The cylinder uses a fixed elastomer bumper rather than an adjustable air cushion, and the -S magnet works with reed or electronic switches.
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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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Related AirTAC ACQJ Compact Cylinders
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