Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50 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 ACQJ40X90-50
The AirTAC ACQJ40X90-50 is a double-acting JIS compact cylinder featuring a 90mm full stroke and a 50mm adjustment window. An external M12x1.25 threaded stop with a lock nut restricts the rod extension, allowing you to dial the usable extend range down to 40mm without swapping parts. The retract stroke remains fixed at its full length. Because the piston area is unchanged, output force equals a standard ACQ of this bore.
Operating at 0.15-1.0 MPa, this unit pushes 628.3 N and pulls 527.8 N at 0.5 MPa. It uses a 16mm rod with an M8x1.25 female end, and a PT1/8 port. Deceleration relies on fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. The body includes magnetic-switch grooves, though this specific SKU ships without the internal magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50 |
|---|---|
| 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 ACQJ40X90-50
| 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 ACQJ40X90-50 Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe during raw material changes without machining new spacer blocks.
Carton Forming Adjustments
Tune the folding arm extension on a packaging line to accommodate varying box depths rapidly.
Assembly Press Positioning
Set precise trial end positions for pressing bearings on an automated assembly cell to prevent over-travel.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50 the Right Cylinder?
If you need less push at 0.5 MPa, the 32mm bore yields 402.1 N; stepping up to the 50mm bore provides 981.8 N. A fixed-stroke ACQ is adequate if your end position never varies. When ordering this adjustable variant, confirm the 40mm bore, 90mm full stroke, 50mm window, female rod thread, and whether you require the S magnet option for sensing.
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 ACQJ40X90-50 FAQ
The usable extend range is 40-90mm (90mm full stroke minus the 50mm window). Force is identical to a standard ACQ: push is 628.3 N and pull is 527.8 N at 0.5 MPa, push is 879.6 N at 0.7 MPa, and maximum push is 128 kgf at 1.0 MPa.
The M12x1.25 adjuster mechanically limits rod extension, shortening the stroke without altering piston area or force. Deceleration uses fixed NBR bumpers, not adjustable air cushions. Like a standard ACQ, it will not hold a load on air loss; use an external rod lock for fail-safe holding.
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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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