Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B
The AirTAC ACQJ40X45-40B is a double-acting JIS compact cylinder featuring a 40mm bore and a 45mm full stroke. An external threaded stop with a lock nut limits the extend end position, providing a usable extend range of 5 to 45mm. You can fine-tune the extend end position directly on your machinery without swapping parts, while the retract stroke remains completely unaffected.
Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore, delivering 628.3N push and 527.8N pull at 0.5 MPa. This unit includes a male-thread piston rod end (M14x1.5) for direct load coupling, fixed elastomer bumpers for end-of-stroke deceleration, and sensor grooves. Note that this specific configuration ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 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 ACQJ40X45-40B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 ACQJ40X45-40B Is Used
Machining Fixture Stops
Adjust the external stop to dial in clamping positions on machining fixtures during part setup or prototype runs.
Assembly Line Changeover
Modify extend endpoints rapidly for different product sizes on automated assembly lines without changing cylinder hardware.
Carton Flap Folders
Tune the extend stroke on packaging equipment to handle varying carton dimensions while maintaining full retract speed.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40B the Right Cylinder?
If your application requires less push force at 0.5 MPa, the 32mm bore variant provides 402.1N, whereas stepping up to the 50mm bore yields 981.8N. A fixed-stroke ACQ cylinder is sufficient if your extend end position never varies. When ordering this adjustable model, confirm the 40mm bore, 45mm full stroke, 40mm adjustment window, the male rod thread option, 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 ACQJ40X45-40B FAQ
The usable extend range is 5-45mm (45mm full stroke minus the 40mm window), and the retract stroke is unaffected. The force is identical to a standard ACQ: 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 external M12x1.25 threaded stop limits only the extend length without altering piston area or force. Fixed elastomer bumpers decelerate the rod near stroke ends, but a plain ACQ-type does not hold its load on air loss; for fail-safe holding, use an external rod lock or pilot-operated check valve.
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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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