Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke100 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B
This double-acting single-rod JIS compact cylinder features an external threaded stop with a lock nut that restricts how far the rod travels outward. You can dial the extension down anywhere from 25 mm up to the full 100 mm directly on the machine, while the retract stroke remains completely unaffected. The adjuster screw utilizes an M12x1.25 thread.
Because the piston area stays the same, output force equals a standard ACQ of this size, delivering 628.3 N push at 0.5 MPa. The unit includes fixed elastomer bumpers for end-of-stroke deceleration rather than adjustable air cushions. It ships with a male M14x1.5 piston rod end for direct load coupling, and the body retains sensor grooves even without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 100 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 ACQJ40X100-75B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 ACQJ40X100-75B Is Used
Machining Fixture Stops
Dial in the exact extend position on a CNC lathe loader without machining new spacer rings when raw part lengths vary slightly.
Carton Changeover
Shift the pushing end point rapidly during packaging line format changes to accommodate different box widths on the fly.
Prototype Press Testing
Find the optimal engagement depth on a laboratory press by testing trial end positions safely before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75B the Right Cylinder?
If you need less push effort, the 32 mm bore yields 402.1 N at 0.5 MPa, whereas stepping up to 50 mm provides 981.8 N. Choose this 40 mm option when your fixture requires roughly 628 N of thrust plus on-the-fly extension tuning. A fixed-stroke ACQ works fine if your end position never changes. Confirm ordering details including the 100 mm full stroke, 75 mm window, male rod thread, and port size PT1/8.
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 ACQJ40X100-75B FAQ
It delivers 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 full stroke is 100 mm with a 75 mm adjustment window, yielding a usable extend range of 25-100 mm. The retract stroke is unaffected.
The external M12x1.25 threaded stop with lock nut limits only the extend distance, leaving force unchanged since piston area is identical to a standard ACQ. Fixed elastomer bumpers decelerate the rod near stroke ends. A plain ACQ will not hold a load on air loss; install an external rod lock or pilot-operated check valve for fail-safe positioning.
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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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