Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30B 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 ACQJ40X300-30B
The ACQJ40X300-30B is a double-acting JIS compact cylinder with an external stop mechanism for on-machine extend tuning. It features a 300mm full stroke and a 30mm adjustment window, allowing the outward travel to be set anywhere from 270mm up to 300mm. The return stroke remains completely unaffected. This long-stroke made-to-order variant exceeds the standard 100mm maximum for this bore size.
Output force matches a standard ACQ because the adjuster alters travel length rather than piston area, delivering 628.3N push at 0.5MPa. The unit incorporates a male M14x1.5 piston rod end for direct load coupling and a PT1/8 port. Fixed elastomer bumpers handle end-of-travel deceleration, while the body retains sensor grooves even though this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30B |
|---|---|
| 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 ACQJ40X300-30B
| 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 ACQJ40X300-30B Is Used
Machining Fixture Stops
Dial in the exact extend position of clamping arms on a CNC machining center during setup, accommodating different part lengths without swapping hardware.
Packaging Diverter Arms
Adjust the pusher stroke on packaging lines to route varying carton sizes, ensuring precise alignment without reprogramming machine logic.
Assembly Press Tuning
Fine-tune the engagement depth of pressing tools on automated assembly equipment during product changeover to prevent over-travel damage.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-30B the Right Cylinder?
For sizing context, dropping to a 32mm bore yields 402.1N push, whereas stepping up to 50mm provides 981.8N at 0.5MPa. If your application never requires altering the extend endpoint, a fixed-stroke ACQ cylinder is sufficient. When ordering, verify the 40mm bore, 300mm full stroke, 30mm window, the male rod thread option, and the absence of a magnet.
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 ACQJ40X300-30B FAQ
The usable extend range is 270-300mm (300mm full stroke minus the 30mm window). 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 external adjuster utilizes an M12x1.25 thread.
No, output force is identical to a standard ACQ because the mechanism limits travel length without changing piston area. Fixed elastomer bumpers decelerate the rod near the endpoints. Note that this model lacks a sensor magnet, and a plain ACQ will drift on air loss, requiring an external rod lock for fail-safe holding.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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