Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10B 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 ACQJ40X250-10B
The AirTAC ACQJ40X250-10B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that restricts the extend end position. It provides a usable extend range of 240-250 mm, letting you dial in the exact travel on the machine without swapping parts. The retract stroke remains completely unaffected. Because the piston area stays the same, output force equals a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa.
This long-stroke made-to-order variant exceeds the 100 mm standard maximum for a 40 mm bore, reaching 250 mm total travel. It features a male M14x1.5 rod-end thread for direct load coupling, a PT1/8 port, and an M12x1.25 adjuster thread. Fixed NBR elastomer bumpers at both ends handle end-of-stroke deceleration, while the body retains sensor grooves, though this specific unit ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10B |
|---|---|
| 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 ACQJ40X250-10B
| 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 ACQJ40X250-10B Is Used
Product Changeover Stops
Quickly modify the extend endpoint within the 240-250 mm range on packaging lines when switching between different carton sizes.
Trial End Positions
Dial in the exact clamping travel on CNC fixtures during initial part setup without machining new spacer rings.
Setup-Varying Diverter
Fine-tune the sorting gate position on a conveyor system to accommodate varying product profiles on the fly.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10B the Right Cylinder?
For 0.5 MPa pneumatic setups, this 40 mm bore yields 628.3 N push and 527.8 N pull. If your application requires less force, stepping down to a 32 mm bore provides 402.1 N push, whereas stepping up to a 50 mm bore offers 981.8 N push. A fixed-stroke ACQ cylinder is sufficient if your end position never varies. Confirm your ordering essentials: 40 mm bore, 250 mm full stroke, 10 mm window, male rod thread (B), and no 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 ACQJ40X250-10B FAQ
The usable extend range is 240-250 mm. Force is identical to a standard ACQ: 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 external M12x1.25 threaded stop with lock nut limits only the extend stroke length; it does not change the piston area or force. Fixed NBR bumpers decelerate the rod near stroke ends, but a plain ACQ-type cylinder will drift on air loss, so an external rod lock or pilot-operated check valve is required for fail-safe load 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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