Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30S 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 SAIJ100BX270-30S
The AirTAC SAIJ100X270-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 270 mm stroke that can be dialed back by up to 30 mm, creating a 240-270 mm usable travel window for fine-tuning the retract end position at commissioning. This 100 mm bore generates 5497 N of push force at 0.7 MPa and features a PT tapered port.
Built with a SUS304 stainless steel rod (option B), it handles demanding environments while supporting AirTAC CMSE reed and DMSE electronic sensors via its integrated dual-side barrel grooves. The rear adjuster acts purely as a mechanical stop to set deceleration and end-position, meaning it will not hold the load without live air pressure. For position holding without continuous pressure, an external rod lock or related SAIL pneumatic-lock cylinder is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30S |
|---|---|
| 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 SAIJ100BX270-30S
| 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 SAIJ100BX270-30S Is Used
Machine Changeover
Dial in the 240-270 mm travel window during product size transitions to set new retract positions without replacing the cylinder.
End-Stop Calibration
Fine-tune the final retract position during commissioning using the rear adjuster screw, avoiding the need for external mechanical stops.
Assembly Pressing
Leverage the 5497 N push force at 0.7 MPa for pressing operations, using the adjustable stroke to compensate for material thickness variations.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or product-size changeovers without physically swapping cylinders or adding external stopper blocks. The 100 mm bore delivers 3927 N push force at 0.5 MPa; if your application needs less force, stepping down to an 80 mm bore yields 2513 N, while moving up to a 125 mm bore provides 6136 N.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 270 mm stroke, 30 mm adjustment range, PT port thread, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the 270 mm stroke is substantial, the 25 mm rod diameter handles significant side loads, but an external guide is still recommended for heavy unsupported loads to prevent premature seal wear.
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 SAIJ100BX270-30S FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm from the nominal 270 mm, providing a usable travel window of 240-270 mm. This stopper sets the end position but does not lock or hold the load without continuous air pressure.
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