Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40SB 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 ACQJ40X90-40SB
The AirTAC ACQJ40X90-40SB is a double-acting JIS compact cylinder featuring an external M12x1.25 threaded stop with a lock nut on the extend side. This mechanism allows you to shorten the extend stroke by up to 40 mm, yielding a usable extend range of 50 to 90 mm without swapping components. The retract stroke remains fixed at the full 90 mm.
Because the piston area is unaltered by the adjuster, output force is identical to a standard ACQ of the same bore: 628.3 N push and 527.8 N pull at 0.5 MPa. The unit includes a -S piston magnet compatible with reed or solid-state switches, a -B male M14x1.5 rod-end thread for direct load coupling, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40SB |
|---|---|
| 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 ACQJ40X90-40SB
| 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 ACQJ40X90-40SB Is Used
Machining Fixture Stops
Dial in the exact clamp position on a CNC fixture during part changeovers, using the external stop to shift the extend endpoint by up to 40 mm without machining new spacers.
Carton Sealing Turrets
Adjust the folding arm penetration depth on the fly for varying box heights, ensuring consistent flap closure while the cylinder maintains its full 90 mm retract stroke.
Assembly Press Tonnage
Set trial end positions for a press fit operation, allowing operators to test engagement depths between 50 and 90 mm before locking the nut for production runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-40SB the Right Cylinder?
If your application only needs a fixed 90 mm extend, a standard ACQ40X90 cylinder is sufficient and more compact. Choose this ACQJ40X90-40SB when the exact extend endpoint must be dialed in on the machine. For higher force, the bore 50 model provides 981.8 N push at 0.5 MPa; for less force, the bore 32 model provides 402.1 N. Confirm your ordering essentials: 40 mm bore, 90 mm full stroke, 40 mm adjuster window, -S magnet, and -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 ACQJ40X90-40SB FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull force; at 0.7 MPa push is 879.6 N. Maximum push is 128 kgf at 1.0 MPa. The full stroke is 90 mm, and the external stop allows an adjustable usable extend range of 50 to 90 mm.
The external M12x1.25 threaded stop with lock nut limits only the extend length, meaning force is identical to a standard ACQ. It uses fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, so for high-energy impacts you should add an external shock absorber.
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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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