Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 225mm 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.
- BoreØ100 mm
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40
The AirTAC SAIJ100X225-40 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a robust 5497N push force at 0.7MPa and uses a G1/2 port with a 25mm piston rod. The integrated rear stopper allows you to trim the effective travel, creating a precise 185-225mm usable window without adding external stops.
This model features a SUS304 stainless steel rod for superior corrosion resistance in washdown or chemically active settings. It retains standard variable air cushions at both ends to manage the 36mm cushion stroke, while the extruded aluminum barrel includes dual sensor grooves. The adjuster acts purely as a mechanical end-stop to fine-tune position, so it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×225 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX225-40 Is Used
Product Changeover
Dial in the 185-225mm travel window on the fly to accommodate different carton lengths or part sizes without changing the cylinder.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to achieve exact alignment without machining external spacers.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for reliable pushing force in food processing or chemical packaging lines.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX225-40 the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder (delivering 3518N push at 0.5MPa) lacks the necessary thrust, but a 125mm bore is physically oversized. The 40mm adjustment range is highly valuable for product changeovers, letting you dial in the exact end-of-stroke position during commissioning rather than swapping out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 100mm bore, 225mm stroke, 40mm adjustment, PT tapered port threads, and mounting accessory. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, intentionally omitting FB, CA, CB, and CR brackets. Since this is a 225mm stroke, ensure external guides support the load to prevent side-load wear on the rod.
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 SAIJ100 Adjustable Cylinder SAIJ100BX225-40 FAQ
At a 0.7MPa operating pressure, this 100mm bore cylinder provides 5497N of push force and 5143N of pull force. It can reach a maximum push force of 7068N at 0.9MPa.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 225mm nominal stroke by up to 40mm. This creates an effective 185-225mm travel window for fine-tuning end positions without replacing the cylinder.
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