Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10
The AirTAC SAIJ125X180-10 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It delivers a robust 6136N pull force at 0.5MPa and features a usable travel window of 170-180mm, letting you trim up to 10mm off the nominal 180mm stroke. This built-in adjuster allows for fine end-position tuning at commissioning without swapping the cylinder or adding external stops.
It operates at speeds of 30-500mm/s and incorporates a 40mm variable air cushion at both ends to decelerate the heavy 32mm carbon steel rod. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface uses the reduced SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 180 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×180 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 Is Used
Machine Changeover
Fine-tune the 170-180mm retract position during product size changes on a packaging line without replacing the cylinder.
End-Stop Tuning
Dial in the exact end position during machine commissioning to meet strict mechanical tolerances for heavy assemblies.
Variable End Stops
Adjust the retract distance up to 10mm to accommodate different material thicknesses in a clamping fixture.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 the Right Cylinder?
Choose this 125mm bore when the 80mm class (2268N pull at 0.5MPa) is insufficient for moving heavy payloads, but stepping up to a 160mm bore (9425N pull) would be overkill. The 10mm adjustable window is ideal for product changeovers on a line, dialing in the exact retract distance without reinstalling hardware. For strokes of 300mm or more, an external guide is recommended to support the rod against side loads. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, use an SAIL or BSAI cylinder. This PT-ported model is dimensionally interchangeable per ISO 15552.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X180-10 FAQ
At 0.5MPa, it provides 6136N of pull force and 8590N at 0.7MPa. The maximum push force is 11045N at 0.9MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 180mm down to 170mm. It sets the end position but does not lock the load without live air pressure.
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