Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke50 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S
The AirTAC ACQJ140X50-40S is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke on the machine from 10 mm up to the full 50 mm, while the retract stroke remains completely unaffected. The adjuster mechanism alters travel length only, meaning the force output stays identical to a standard ACQ of this bore.
Operating pressure spans 0.15 to 1.0 MPa, delivering a push force of 7696.9 N and pull force of 7294.8 N at 0.5 MPa. The Ø32 mm piston rod features an M22x2.5 female rod-end thread, and the external adjuster utilizes an M27x2.0 thread. Fixed NBR elastomer bumpers absorb impact at each end, and the integrated -S magnet supports both reed and solid-state switches via the body's sensor grooves.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 50 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| 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 | M22×2.5 (F) / M30×1.5 (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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S Is Used
Heavy Press Tonnage Setup
Dial in the exact extend stop during heavy press changeovers without machining new spacers or swapping cylinder bodies.
Large Welding Fixture Calibration
Trial different end positions on large welding fixtures to accommodate varying metal part dimensions on the fly.
Palletizer Forming Stops
Adjust the extend limit on palletizer end-of-arm tooling to handle varying pallet or container heights directly at the machine.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S the Right Cylinder?
If your application requires less thrust, stepping down to the 125 mm bore yields a 6135.9 N push at 0.5 MPa, whereas moving up to the 160 mm bore provides 10053.1 N. A fixed-stroke ACQ cylinder is sufficient if your end-position never requires shifting. When ordering this adjustable variant, confirm the 140 mm bore, 50 mm full stroke, 40 mm adjustment window, -S magnet, and female 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-40S FAQ
It delivers a push force of 7696.9 N and a pull force of 7294.8 N at 0.5 MPa, or 10775.7 N push at 0.7 MPa, with a maximum push of 1570 kgf at 1.0 MPa. The full stroke is 50 mm with a 40 mm adjustment window, allowing a usable extend range of 10-50 mm.
The external M27x2.0 threaded stop with a lock nut limits the extend travel without altering piston area, so force remains identical to a standard ACQ. Fixed NBR elastomer bumpers absorb end-of-travel impact, though the cylinder will not hold its load on air loss without an external rod lock.
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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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