Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB 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
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB
The AirTAC ACQJ140X125-100SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the EXTEND end position. You can fine-tune the usable extend range from 25 mm up to the full 125 mm directly on your machinery, shortening the stroke by up to 100 mm without swapping components. The RETRACT stroke remains completely unaffected, and the adjuster (R M27x2.0 thread) alters stroke length only.
Because the piston area stays the same, output force is identical to a standard ACQ of this bore, yielding 7696.9 N push and 7294.8 N pull at 0.5 MPa. This big-bore Ø140 variant includes a male-thread piston rod end (M30x1.5) for direct load coupling, a -S magnet for position sensing, and fixed NBR elastomer bumpers at each end. Operating pressure spans 0.15 to 1.0 MPa, with a PT3/8 port.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB |
|---|---|
| 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 ACQJ140X125-100SB
| 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 ACQJ140X125-100SB Is Used
Press Tooling Changeover
Dial in the exact extend stop during product family changeovers on large stamping presses, avoiding the need to machine custom spacers for each new die height.
Heavy Fixture Positioning
Adjust the clamping reach on multi-model automotive welding fixtures, tuning the 25-125 mm extend range to accommodate varying part thicknesses rapidly.
Palletizer Plunge Depth
Set precise end positions for heavy-duty palletizing arms handling different pallet heights, using the external stop to fine-tune the downward plunge without reprogramming valves.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-100SB the Right Cylinder?
Selecting this 140 mm bore provides 7696.9 N push at 0.5 MPa, sitting between the Ø125 (6135.9 N) and Ø160 (10053.1 N) compact frames. If your end position never varies, a fixed-stroke ACQ suffices; otherwise, this adjustable unit allows on-the-fly extend tuning. Confirm your ordering essentials: 140 mm bore, 125 mm full stroke, 100 mm window, -S magnet, and -B male 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 ACQJ140X125-100SB FAQ
It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The usable extend range is 25-125 mm (125 mm full stroke minus a 100 mm window). The bore is 140 mm, the piston rod is Ø32 mm, the port is PT3/8, the male rod thread is M30x1.5, and the external adjuster thread is M27x2.0.
No, the external stop only limits how far the rod extends; the piston area is unchanged, so force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers for end-of-stroke deceleration rather than adjustable air cushions. For fail-safe load holding on air loss, you must add an external rod lock or pilot-operated check valve, as the fixed bumper only decelerates near the stroke end.
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