Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke250 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100
The ACQJ40X250-100 is a double-acting JIS compact cylinder with a 250mm stroke and a 40mm bore. An external M12x1.25 threaded stop and lock nut limits the rod extension, allowing you to dial in the extend end position from 150mm up to the full 250mm. The retract stroke remains completely unaffected. This long-stroke variant exceeds the standard 100mm maximum for this bore size and is produced as a made-to-order unit.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore, delivering 628.3N push and 527.8N pull at 0.5 MPa. The body features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. It uses a PT1/8 port and a 16mm rod with a female M8x1.25 end thread. Note that this specific SKU ships without a sensor magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 250 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 ACQJ40X250-100
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 ACQJ40X250-100 Is Used
Long-Reach Machining Stops
Set precise material stops on a CNC production line. The 150-250mm extend range allows operators to accommodate different billet lengths without swapping out actuators.
Packaging Diverter Arms
Route varying carton sizes on a packaging conveyor by tweaking the external stop. The 40mm bore provides 628.3N of push force to reliably move heavy boxes.
Assembly Press Positioning
Trial different end positions for pressing sub-components. The lock nut secures the M12x1.25 adjuster so the chosen stroke holds firm during high-speed cycling.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100 the Right Cylinder?
Selecting this 40mm bore actuator provides a maximum push of 128 kgf at 1.0 MPa. If your application requires less force, stepping down to a 32mm bore yields 402.1N push at 0.5 MPa, while moving up to a 50mm bore offers 981.8N. A fixed-stroke ACQ is sufficient if your end position never changes, but this adjustable model is ideal for setups requiring on-the-fly tuning. When ordering, confirm the 40mm bore, 250mm full stroke, 100mm adjustment window, female rod thread, and that no magnet is required.
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 ACQJ40X250-100 FAQ
This 40mm bore cylinder provides 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 250mm, and with the 100mm adjustment window, the usable extend range is 150-250mm.
The external M12x1.25 threaded stop physically limits how far the rod extends, shortening the stroke without changing the piston area or force output. The retract stroke is unaffected. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. This model lacks a sensor magnet, though the body retains switch grooves.
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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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