Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke150 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB
The ACQJ125X150-40SB is a big-bore JIS compact cylinder featuring a double-acting single rod and an external extend stroke adjuster. By turning the M27x2.0 stopper screw with its lock nut, you can fine-tune the forward end position on your machinery. This yields a usable extend range of 110 to 150 mm, while the retract stroke remains completely unaffected.
Because the adjustment only limits travel and not the piston area, output force stays identical to a standard ACQ of this bore. Operating at 0.5 MPa yields 6135.9 N of push force and 5733.8 N of pull force. This variant includes a male M30x1.5 rod end for direct load coupling, a built-in piston magnet for electronic or reed switches, and fixed NBR elastomer bumpers at both ends.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 150 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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 ACQJ125X150-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 ACQJ125X150-40SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 110 to 150 mm extend reach on a multi-stage metal stamping press during tooling changes without machining new spacers.
Woodworking Line Changeover
Adapt large panel clamping arms quickly when switching between thick and thin board stock on an automated routing conveyor.
Palletizer End Stops
Tune the final lowering position of a heavy-duty lifting fork to handle varying pallet heights safely before triggering the fixed bumper.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-40SB the Right Cylinder?
Selecting this 125 mm bore unit means needing substantial power alongside travel flexibility. If your application requires less thrust, stepping down to a 100 mm bore provides 3927.0 N push at 0.5 MPa; conversely, moving up to a 160 mm bore yields 10053.1 N. If exact end positioning is unnecessary, a fixed-stroke ACQ cylinder will suffice. When ordering this adjustable model, confirm the 150 mm total stroke, the 40 mm window, the male rod thread, and the magnetic switch requirement.
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 ACQJ125X150-40SB FAQ
At 0.5 MPa, push force is 6135.9 N and pull force is 5733.8 N; at 0.7 MPa push is 8590.3 N. The maximum push at 1.0 MPa is 1251 kgf. The full stroke is 150 mm, and with the 40 mm window, the usable extend range is 110 to 150 mm.
An external M27x2.0 threaded stop with a lock nut mechanically limits the extend length, leaving retract travel unchanged. Force remains identical to a standard ACQ because piston area is unaltered. The cylinder uses fixed NBR bumpers, not adjustable air cushions, and will not hold a load on air loss without an external rod lock.
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Related AirTAC ACQJ Compact Cylinders
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