Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB
The AirTAC ACQJ40X75-30SB is a double-acting JIS compact cylinder featuring a 40mm bore and a 75mm full stroke. An external threaded stop with a lock nut limits the extend end position, giving a usable extend range of 45-75mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore.
This model includes a male M14x1.5 piston rod end for direct load coupling and a built-in piston magnet for position sensing. It uses a PT1/8 port and relies on a fixed NBR elastomer bumper at each end for deceleration. The external adjuster utilizes an M12x1.25 thread, allowing precise on-machine end-position tuning without swapping components.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 75 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 ACQJ40X75-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 ACQJ40X75-30SB Is Used
Machining Fixture Clamps
Dial in the exact clamping extension on a machining fixture to accommodate varying raw material thicknesses without fabricating custom spacers.
Carton Sealing Stops
Adjust the rod extension on a packaging line to match different box heights during quick product changeovers, ensuring consistent fold pressure.
Assembly Press Trials
Set trial end positions on an assembly press to find the optimal pressing depth for new components before locking down the final stroke.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30SB the Right Cylinder?
If you need slightly less force, the 32mm bore offers a 402.1N push at 0.5MPa, while stepping up to the 50mm bore yields 981.8N for heavier demands. At 40mm, this cylinder delivers a 628.3N push and a 527.8N pull at 0.5MPa. If your extend position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 40mm bore, 75mm full stroke, 30mm adjustment window, the -S magnet, and the -B male rod thread.
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 ACQJ40X75-30SB FAQ
The usable extend range is 45-75mm (75mm full stroke minus the 30mm window). Force is identical to a standard ACQ: 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 retract stroke is unaffected.
The external M12x1.25 threaded stop with a lock nut limits how far the rod extends, shortening the stroke length without changing the piston area, so force is not reduced. The cylinder uses a fixed NBR elastomer bumper for deceleration. The -S magnet works with reed or solid-state switches, and the -B option provides a male M14x1.5 rod thread.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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