Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40
The AirTAC ACQJ40X50-40 is a double-acting JIS compact cylinder with a 40mm bore and a 50mm full stroke. An external threaded stop with a lock nut limits the extend end position, providing a usable extend range of 10-50mm. The retract stroke remains unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This unit features a 16mm piston rod, a PT1/8 port, and fixed elastomer bumpers at both ends for end-of-stroke deceleration. The body includes magnetic-switch grooves for position sensing, though this specific configuration ships without a magnet. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed capability of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 50 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 ACQJ40X50-40
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACQJ40X50-40 Is Used
Machining Fixture Stops
Dial in the extend position on a CNC machining fixture to accommodate raw part tolerances without swapping cylinder hardware.
Packaging Changeover
Adjust the extend endpoint on a packaging line to handle different carton depths during rapid product format changes.
Assembly Press Tonnage
Set precise trial end positions on an assembly press to verify component seating distance before finalizing the mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40 the Right Cylinder?
If 628.3N push at 0.5MPa is excessive, consider the 32mm bore offering 402.1N; if more thrust is required, step up to the 50mm bore providing 981.8N. A fixed-stroke ACQ is sufficient if your extend position never requires adjustment. When ordering, confirm the 40mm bore, 50mm full stroke, 40mm adjustment window, female rod-end thread M8x1.25, and whether the S magnet option is needed for reed or solid-state switches.
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 ACQJ40X50-40 FAQ
This 40mm bore cylinder 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 50mm, and the external M12x1.25 adjuster allows the extend stroke to be shortened by up to 40mm, yielding a usable extend range of 10-50mm.
No, the adjuster only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed elastomer bumpers at both ends, not an adjustable air cushion. For high kinetic energy loads, use an external shock absorber.
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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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