Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke90 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S
The AirTAC ACQJ40X90-30S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut on the rod-end side. This adjuster limits the extend travel, allowing you to fine-tune the end position directly on the machine without changing parts. The usable extend range spans 60 to 90 mm, while the retract stroke remains completely unaffected.
Because the piston area is unchanged, the force is identical to a standard ACQ of the same bore, delivering 628.3 N push at 0.5 MPa. The cylinder uses a 16 mm rod, an M12x1.25 adjuster thread, and fixed elastomer bumpers at both ends. The built-in magnet (-S) supports reed or electronic solid-state switches for precise positioning.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 90 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 ACQJ40X90-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 ACQJ40X90-30S Is Used
Machining Fixture Stops
Dial in the exact clamping extension on a CNC fixture during setup, adjusting the 60-90 mm travel to accommodate different part geometries without machining new stops.
Packaging Changeover
Accommodate varying carton sizes on a packaging line by turning the external stop screw to shift the extend end position rapidly during product changeover.
Assembly Press Trials
Test pressing depths on an assembly station by tweaking the extend stroke in the field, finding the optimal end position before locking the nut for production.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-30S the Right Cylinder?
This 40 mm bore model provides 628.3 N push and 527.8 N pull at 0.5 MPa, sitting between the 32 mm bore (402.1 N push) and the 50 mm bore (981.8 N push). If your extend end position never varies, a fixed-stroke ACQ cylinder will suffice. When ordering, confirm the 40 mm bore, 90 mm full stroke, 30 mm window, the -S magnet, and the female M8x1.25 rod-end 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 ACQJ40X90-30S FAQ
The 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 full stroke is 90 mm with a 30 mm window, giving a usable extend range of 60-90 mm. The retract stroke is unaffected.
An external M12x1.25 threaded stop with a lock nut limits the extend travel without changing the piston area, so the force remains unchanged. The cylinder uses fixed elastomer bumpers at each end rather than adjustable air cushions. For high-speed loads, add 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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