Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40
The AirTAC SAIJ100X275-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 7068N of push force at 0.9 MPa. Its integrated adjusting screw allows you to trim the effective travel back by up to 40 mm, providing a usable stroke window of 235-275 mm. This means you can dial in the exact end-position at commissioning without swapping out the entire cylinder or adding bulky external stops.
Built with a SUS304 stainless steel rod and PT tapered port threads, this 100mm bore model is designed for demanding environments. The extruded aluminum barrel features dual-side sensor grooves, ready to accept standard AirTAC switches if position feedback is added later. The rear adjuster acts purely as a travel stop and deceleration marker, meaning it will not mechanically hold a load if air pressure is lost.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100BX275-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SAIJ100BX275-40 Is Used
Machine Setup Changeover
Fine-tune the 235-275mm travel window during product family changeovers to hit exact insertion depths without repositioning cylinder mounts.
Variable End-Stop Forming
Dial in the rear stopper to accommodate different material thicknesses or forming depths on the fly, ensuring precise end-positioning.
Adjustable Ejector Stroke
Modify the ejection reach on an assembly line to handle varied part sizes, using the 40mm adjustment range to prevent over-travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40 the Right Cylinder?
Choose this adjustable-stroke variant over a fixed SAI cylinder when your application requires variable end-stops or frequent product-size changeovers on a line. If you need less force, stepping down to an 80mm bore yields 4523N of push at 0.9 MPa, while moving up to 125mm provides 11045N for heavier payloads. Because the 275mm stroke is substantial, ensure you use an external guide to prevent excessive side-loading on the rod.
This model is dimensionally interchangeable per ISO 15552 mounting interfaces. It supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). For any load-holding requirements without live air pressure, this cylinder is insufficient; you would need to specify a SAIL locking cylinder or a BSAI clamp-lock variant instead.
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 SAIJ100BX275-40 FAQ
At 0.9 MPa, this 100mm bore cylinder provides 7068N of push force and 5497N of pull force. It operates at speeds between 30-800 mm/s.
The rear adjuster screw lets you shorten the 275mm nominal stroke by up to 40mm, creating a usable travel window of 235-275mm. It acts as a physical stop to set the end position and does not lock the load without air pressure.
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