Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40B 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 ACQJ40X90-40B
The ACQJ40X90-40B is a double-acting JIS compact cylinder featuring a 40mm bore and a 90mm full stroke. An external M12x1.25 threaded stop with a lock nut limits the extend end position, yielding a usable forward travel range of 50 to 90mm. The return stroke remains fixed and unaffected by this adjustment. Because the piston area stays constant, output force equals a standard ACQ of identical size.
This variant includes a male M14x1.5 rod-end thread for direct load coupling and uses a PT1/8 supply port. It lacks a magnet, though the body retains magnetic-switch grooves for adding sensors later. Travel speed spans 30-500mm/s, and fixed NBR elastomer bumpers absorb impact at both stroke ends without needing manual cushioning valves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40B |
|---|---|
| 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 ACQJ40X90-40B
| 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 ACQJ40X90-40B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture during part changeovers without machining new stop collars.
Transfer Line Diverters
Tune the stroke of a sorting diverter on a packaging conveyor to handle varying box dimensions on the fly.
Prototype Press End-Points
Establish the optimal pressing depth on a test rig by adjusting the extend stop in the field until the desired result is found.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40B the Right Cylinder?
Choosing this 40mm bore provides 628.3N push and 527.8N pull force at 0.5MPa. If your setup requires less power, dropping to a 32mm bore yields 402.1N push, while stepping up to a 50mm bore offers 981.8N push. A fixed-stroke ACQ is sufficient if your extend position never requires alteration. When ordering, verify the 90mm full stroke, 40mm adjuster window, male rod thread, and that no magnet is needed for your current sensor strategy.
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 ACQJ40X90-40B FAQ
It delivers 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 full stroke is 90mm with a 40mm adjustable window, giving a usable extend range of 50-90mm. The retract stroke is unaffected. It features a 40mm bore, 16mm rod, and a PT1/8 port.
The external M12x1.25 threaded stop with lock nut physically blocks the rod from extending further, shortening the forward stroke only. The piston area is unchanged, so force remains identical to a standard ACQ. Fixed NBR bumpers decelerate the load at stroke ends. Note that a plain ACQ-type cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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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