Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S
The AirTAC ACQJ40X50-40S is a double-acting JIS compact cylinder with a 40mm bore and 50mm full stroke. An external M12x1.25 threaded stop and lock nut restricts the extend end position, yielding a usable forward range of 10 to 50 mm. The return stroke remains at the standard 50 mm. Because the piston area is unchanged, output force equals that of a regular ACQ.
This unit pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. It features a 16mm rod, PT1/8 porting, and fixed NBR elastomer bumpers at both ends for end-of-travel deceleration. The -S suffix indicates a built-in magnet compatible with reed or solid-state switches. Operating pressure spans 0.15 to 1.0 MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 50 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 ACQJ40X50-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACQJ40X50-40S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe during part family changeovers without machining new spacers.
Carton Sealing Turrets
Alter the flap folding depth on packaging lines for various box sizes by turning the external stopper nut.
Assembly Press Trial
Safely test bearing insertion depth on automated assembly presses by starting at the minimum 10mm extension.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40S the Right Cylinder?
If you need less push force at 0.5 MPa, the 32mm bore delivers 402.1 N; for heavier loads, the 50mm bore provides 981.8 N. Choose this adjustable version when trial end positions are required during machine setup or product changeover; otherwise, a fixed-stroke ACQ is simpler. Confirm your ordering details: 40mm bore, 50mm full stroke, 40mm adjustment window, magnet (-S), and the default female M8x1.25 rod end 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 ACQJ40X50-40S FAQ
At 0.5 MPa, push force is 628.3 N and pull force is 527.8 N; at 0.7 MPa, push is 879.6 N. Maximum push is 128 kgf at 1.0 MPa. The full stroke is 50mm with a 40mm window, giving a usable extend range of 10-50mm. The piston rod is 16mm with a female M8x1.25 end thread, a PT1/8 port, and an M12x1.25 adjuster thread.
No. The adjuster only limits how far the rod extends, leaving the retract stroke unaffected. Because the piston area remains the same, force is identical to a standard ACQ. Deceleration is handled by fixed elastomer bumpers, not adjustable air cushions, so external shock absorbers may be needed for high energy loads.
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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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