Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB
The AirTAC ACQJ140X175-75SB is a double-acting JIS compact cylinder featuring a 140mm bore and a 175mm full stroke. An external M27x2.0 threaded stop with a lock nut lets you fine-tune the extend end position on the machine without swapping parts. This yields a usable extend range of 100 to 175mm, while the retract stroke remains completely unaffected. Equipped with a male M30x1.5 rod end and a PT3/8 port, it couples directly to heavy loads.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore: 7696.9N push and 7294.8N pull at 0.5MPa. The unit relies on fixed NBR elastomer bumpers at each end rather than adjustable air cushions, so for high kinetic energy you should add an external shock absorber. The integrated -S piston magnet works with reed or electronic solid-state switches, and this big-bore body supports up to 300mm strokes.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 175 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 ACQJ140X175-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×175 | 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 ACQJ140X175-75SB Is Used
Heavy Press Tooling
Dial in the exact 100 to 175mm extend stop during press tooling setup to accommodate varying material thicknesses without machining new spacer blocks.
Automotive Component Forming
Trial different end positions on the fly for automotive metal-forming machines, finding the optimal contact point before locking down the M27x2.0 adjuster nut.
Palletizer Changeover
Adapt extend strokes quickly during product changeover on large palletizing lines, ensuring precise placement without altering the fixed retract stroke.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75SB the Right Cylinder?
Selecting this 140mm bore provides 7696.9N push at 0.5MPa; dropping to a 125mm bore yields 6135.9N, whereas a 160mm bore offers 10053.1N. If your extend end position never varies, a fixed-stroke ACQ cylinder is simpler and suffices. When ordering this adjustable variant, confirm the 175mm full stroke, the 75mm window, the -S magnet, and the -B male rod thread. Note that a plain compact cylinder drifts on air loss, so specify an external rod lock or pilot-operated check valve if you need fail-safe load holding.
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 ACQJ140X175-75SB FAQ
It delivers 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 175mm stroke can be shortened by up to 75mm, giving a usable extend range of 100 to 175mm. Force remains identical to a standard ACQ because the adjuster only changes stroke length.
An external M27x2.0 threaded screw with a lock nut limits the extend stroke, allowing on-machine tuning while the retract stroke stays unaffected. The cylinder uses fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, so external shock absorbers are recommended for high-speed or high-energy loads. The -S magnet supports both reed and electronic solid-state switches.
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