Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke80 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S
The AirTAC ACQJ40X80-50S is a double-acting JIS compact cylinder with an external M12x1.25 threaded stop and lock nut that limits the rod extension. You can tune the usable extend range from 30 mm up to the full 80 mm directly on your machine without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, output force equals a standard ACQ of the same bore: 628.3 N push and 527.8 N pull at 0.5 MPa. The body integrates fixed NBR elastomer bumpers at both ends and includes a piston magnet (-S) for position sensing with reed or solid-state switches. Operating pressure spans 0.15 to 1.0 MPa, and the unit runs at speeds of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 80 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 ACQJ40X80-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 ACQJ40X80-50S Is Used
Machining Fixture Stops
Dial in the exact extend position from 30 to 80 mm on CNC machining fixtures to accommodate raw part tolerances without machining new spacer blocks.
Packaging Size Changeovers
Rapidly adjust the extend endpoint during packaging line product changeovers to handle different carton depths on the fly.
Assembly Press Trials
Set trial end positions during electronics assembly press setup, relying on the fixed elastomer bumper to absorb end-of-stroke energy.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50S the Right Cylinder?
Selecting this 40 mm bore provides 628.3 N push 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 application never requires end-position variance, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 40 mm bore, 80 mm full stroke, 50 mm adjustable window, the -S magnet option, and the default female M8x1.25 rod-end thread with PT1/8 port.
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 ACQJ40X80-50S FAQ
It delivers 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 usable extend range is 30-80 mm, created by the 50 mm adjustment window on the 80 mm full stroke.
No, the external M12x1.25 stop changes only the extend length, not the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers at both ends rather than adjustable air cushions, and the -S magnet works with reed or electronic switches.
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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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