Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S
The ACQJ140X125-50S is a double-acting JIS compact cylinder featuring a big-bore 140mm body and an integrated piston magnet. An external M27x2.0 threaded stop with a lock nut restricts how far the rod travels outward, providing a usable extend range of 75 to 125mm. The return stroke remains fixed at its original length, and the unit relies on NBR elastomer bumpers for end-of-cycle deceleration.
Because the adjustment only limits travel length, the output power matches a standard ACQ of identical size. At 0.5MPa it delivers 7696.9N of push force and 7294.8N of pull force, reaching 10775.7N when supplied at 0.7MPa. The PT3/8 port and 32mm rod ensure robust airflow and structural integrity for heavy-duty tasks.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 125 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 ACQJ140X125-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×125 | 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 ACQJ140X125-50S Is Used
Heavy Press Tonnage Setup
Dial in the exact 75 to 125mm extend reach during heavy press tooling setup, allowing rapid adaptation to different die heights without machining new spacers.
Large Assembly Changeover
Modify the outward end stop on a large assembly line to accommodate product family changeovers, hitting varied clamping depths quickly via the external lock nut.
Trial End Positions
Establish precise trial end positions for massive metal-forming operations, tweaking the outward reach in small increments while the retract distance stays constant.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S the Right Cylinder?
Choosing this 140mm bore yields 7696.9N push at 0.5MPa. If your application requires less force, the smaller 125mm variant provides 6135.9N, whereas scaling up to the 160mm version offers 10053.1N. A fixed-stroke ACQ is sufficient when no on-machine end-position tuning is required. To order, confirm the 125mm full stroke, the 50mm adjustment window, the -S magnet for solid-state or reed sensors, and the default female M22x2.5 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50S FAQ
It provides 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570kgf at 1.0MPa. The full stroke is 125mm with a 50mm window, allowing an extend range of 75 to 125mm. It uses a PT3/8 port, a 32mm rod, a female M22x2.5 rod-end thread, and an M27x2.0 adjuster thread.
No, the external stop only changes the extend travel distance; the piston area remains identical, so force matches a standard ACQ. The cylinder uses fixed NBR bumpers for deceleration, not adjustable air cushions. A plain compact cylinder will not hold a load if air pressure drops; for fail-safe holding, install an external rod lock or pilot-operated check valve.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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