Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100
The AirTAC SAIJ100X270-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 270 mm stroke that can be dialed back by up to 100 mm, yielding a highly flexible 170-270 mm usable travel window for precise end-position tuning at commissioning. Delivering a robust 7068 N of push force at 0.9 MPa, it handles heavy loads with ease.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance and is fitted with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a mechanical stop to fine-tune travel ends and is not a locking device.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAIJ100BX270-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SAIJ100BX270-100 Is Used
Product Changeover
Dial in the 170-270 mm travel window during production line changeovers to accommodate different package lengths without replacing the actuator.
End-Stop Calibration
Use the 100 mm rear adjustment screw to fine-tune the exact retract position during machine commissioning, avoiding the need for external shims.
Heavy Forming Press
Leverage the 7068 N push force at 0.9 MPa for heavy stamping or pressing tasks that require precise and repeatable end-of-stroke positioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-100 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires substantial force—stepping down to a 63 mm bore drops the 0.5 MPa push force to 1559 N, while moving up to a 125 mm bore yields 6136 N. The 100 mm adjustment range is ideal for machinery that frequently processes varying product sizes, allowing you to reconfigure the end-stop without physically swapping the cylinder or adding external stops.
Because the 270 mm stroke exceeds the 300 mm threshold, ensure you use an external guide to support the load and mitigate side-loading on the rod. For load-holding requirements without live air pressure, note that the rear adjuster only sets the travel end; you should select a SAIL or BSAI cylinder instead. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and 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 SAIJ100 Adjustable Cylinder SAIJ100BX270-100 FAQ
This 100 mm bore cylinder delivers a push force of 3927 N at 0.5 MPa and 7068 N at 0.9 MPa. The pull force at 0.5 MPa is 3681 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the 270 mm nominal stroke by up to 100 mm, providing a usable travel window of 170-270 mm. It is a stop, not a lock, and requires live air to hold the load.
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