Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75B 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 ACQJ40X90-75B
The AirTAC ACQJ40X90-75B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 15 mm up to the full 90 mm directly on the machine without swapping parts, while the retract stroke remains unaffected. It features a male M14x1.5 piston rod end that couples directly to your load.
Because the piston area is unchanged, force output is identical to a standard ACQ of this bore. The 40 mm bore generates 628.3 N push and 527.8 N pull at 0.5 MPa, reaching 879.6 N push at 0.7 MPa with a maximum push capacity of 128 kgf at 1.0 MPa. The unit uses a PT1/8 port, operates at speeds of 30-500 mm/s, and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75B |
|---|---|
| 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 ACQJ40X90-75B
| 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 ACQJ40X90-75B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture during setup, shortening the extend stroke from 90 mm down to 15 mm to clear varying workpiece heights.
Packaging Line Diverters
Adjust the actuation stroke on a packaging conveyor diverter to handle different carton widths without changing out the cylinder or mounting hardware.
Assembly Press Positioning
Set trial end positions on an electronic assembly press, using the external M12x1.25 adjuster to fine-tune the pressing depth for new component profiles.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75B the Right Cylinder?
If you need less push force, the 32 mm bore delivers 402.1 N at 0.5 MPa, or step up to the 50 mm bore for 981.8 N. A fixed-stroke ACQ is sufficient if your extend end position never requires adjustment. This ACQJ40X90-75B configuration includes the 40 mm bore, 90 mm full stroke, 75 mm adjuster window, male M14x1.5 rod thread, and no magnet.
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 ACQJ40X90-75B FAQ
It provides 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, and the external adjuster allows you to shorten the extend stroke by up to 75 mm, yielding a usable extend range of 15-90 mm.
The external threaded stop with a lock nut limits only the extend stroke length, so force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, and this model ships without a sensor magnet.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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