Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke75 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S
The AirTAC ACQJ140X75-50S is a double-acting JIS compact cylinder featuring an external adjustable extend stop. A threaded rod-end screw with a lock nut restricts forward travel, yielding a usable extension span of 25 to 75 mm. The return journey remains at the full 75 mm, while the -50 mm window allows precise endpoint tuning directly at the equipment without swapping components.
Part of the big-bore compact range supporting up to 300 mm strokes, this Ø140 mm unit delivers push force identical to a standard ACQ: 7696.9 N at 0.5 MPa and 1570 kgf maximum at 1.0 MPa. It includes a piston magnet for position sensing, a fixed NBR elastomer bumper at each end, and a PT3/8 port.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 75 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 ACQJ140X75-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×75 | 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 ACQJ140X75-50S Is Used
Heavy Press Tooling
Dial in the exact clamping extension during multi-product changeovers on large stamping presses without machining new spacer blocks.
Large Assembly Jigs
Establish trial end positions for heavy-duty riveting or joining fixtures, tweaking the 25 to 75 mm forward span on the fly.
Bending & Forming Stops
Set precise material contact points on thick-plate bending machines, altering the stroke limit to accommodate different flange lengths.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50S the Right Cylinder?
If your application only requires 7696.9 N of push force at 0.5 MPa and a static 75 mm forward throw, a fixed-stroke ACQ140X75-S will suffice. Stepping up to the Ø160 bore raises 0.5 MPa push output to 10053.1 N, whereas dropping to Ø125 lowers it to 6135.9 N. When ordering this adjustable variant, confirm the 140 mm bore, 75 mm total stroke, 50 mm adjuster window, the female M22x2.5 rod-end thread, and the built-in magnet.
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 ACQJ140X75-50S FAQ
The usable extend span is 25 to 75 mm (75 mm total minus the 50 mm window). Force matches a standard ACQ of this bore: 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and 1570 kgf max push at 1.0 MPa. The external adjuster uses an M27x2.0 thread.
The external stop limits extension length only; piston area is unchanged so output force remains identical to a standard ACQ. Travel end energy is handled by a fixed NBR elastomer bumper, not an adjustable air cushion. For high kinetic energy loads, add an external shock absorber. Note that a plain cylinder drifts on air loss, so use an external rod lock for fail-safe holding.
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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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