Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S
The AirTAC ACQJ40X300-30S is a double-acting, single-rod JIS compact cylinder built for long-stroke applications. As a made-to-order variant, its 300mm stroke exceeds the standard 100mm maximum for a 40mm bore. An external threaded stop with a lock nut limits the extend end position, providing a usable forward range of 270 to 300mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore. You get 628.3N push and 527.8N pull at 0.5MPa. The unit includes a 16mm rod, an M8x1.25 female rod-end thread, and an M12x1.25 adjuster thread. Fixed NBR elastomer bumpers handle end-of-stroke deceleration, while the built-in magnet (-S) works with reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 300 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 ACQJ40X300-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 ACQJ40X300-30S Is Used
Machining Center Changeovers
Dial in the exact extend stop during CNC fixture swaps without machining new spacers or swapping cylinders.
Package Sorting Diverters
Tune the pusher rod extension on the fly to handle varying carton sizes on a single sorting line.
Material Lift Stations
Set precise upper end positions for stacking or lifting trays, adjusting the stop height as pallet heights change.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30S the Right Cylinder?
If your application requires less push force, the 32mm bore yields 402.1N at 0.5MPa, whereas the 50mm bore provides 981.8N for heavier loads. A standard fixed-stroke ACQ is sufficient if you do not need on-machine end-position tuning. When ordering, confirm the 40mm bore, 300mm full stroke, 30mm adjustment window, the -S magnet, and your preferred rod thread. Note that a plain ACQ-type cylinder will not hold a load on air loss; add an external rod lock or pilot-operated check valve for fail-safe positioning.
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 ACQJ40X300-30S FAQ
It delivers 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 300mm, with a 30mm adjustment window allowing a usable extend range of 270-300mm.
An external M12x1.25 threaded stop with a lock nut shortens the extend stroke mechanically; it does not alter piston area, so force remains identical to a standard ACQ. Fixed NBR bumpers decelerate the load near stroke ends, but the cylinder will not hold a load on air loss without an external rod lock.
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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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