Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB
The ACQJ125X300-10SB is a big-bore JIS compact pneumatic cylinder engineered for double-acting operation with a 300mm full stroke. An external M27x2.0 threaded stop and lock nut limits the extend end position, giving a usable forward range of 290-300mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area stays constant, output force matches a standard ACQ exactly.
This 125mm bore unit pushes with 6135.9N at 0.5MPa and 8590.3N at 0.7MPa, reaching a maximum push of 1251kgf at 1.0MPa. It features a 32mm piston rod with an M30x1.5 male thread for direct load coupling. PT3/8 ports supply air, while fixed NBR elastomer bumpers absorb impact at both ends. The included -S magnet works seamlessly with reed or electronic solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 300 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 ACQJ125X300-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 ACQJ125X300-10SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 290-300mm extend stop during heavy press commissioning to test different material thicknesses without swapping mechanical spacers.
Automated Welding Changeover
Adjust the forward stroke on the fly when switching between automotive frame jigs, ensuring precise electrode positioning across product variants.
Large Fixture Positioning
Fine-tune the end position of large clamping fixtures in machinery assembly, using the male M30x1.5 rod end to secure heavy tooling profiles.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X300-10SB the Right Cylinder?
Selecting this 125mm bore actuator provides 6135.9N push force at 0.5MPa, sitting above the 63mm bore (1558.6N push) and below larger custom units. A fixed-stroke ACQ is sufficient if your end position never varies, but this model is necessary when setups require trial forward positions. Confirm the 300mm full stroke, 10mm adjuster window, -S magnet, and -B male rod thread when ordering.
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 ACQJ125X300-10SB FAQ
It delivers 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The full stroke is 300mm, with a 10mm adjustment window allowing a usable extend range of 290-300mm.
The external M27x2.0 threaded stop with lock nut mechanically limits the forward stroke length without changing the output force. Fixed NBR bumpers decelerate the piston near stroke ends, but the cylinder will not hold a load on air loss; use an external rod lock or pilot-operated check valve for fail-safe positioning.
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Covers non-human-caused product damage.
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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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