Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30 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 SAIJ100BX270-30
The AirTAC SAIJ100X270-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 240-270mm usable travel window from its 270mm nominal stroke. Delivering 3927N of push force at 0.5MPa, it uses a robust 25mm stainless steel (SUS304) rod to handle demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This adjustable-stroke design allows you to fine-tune the retract end position during commissioning without swapping the cylinder or adding external stops. The 30mm adjustment range is ideal for accommodating product size changes on a line. The rear adjuster acts as a hard stop for position tuning, not a lock, so an external rod lock or pilot-operated check valve is required to hold loads without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30 |
|---|---|
| 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 SAIJ100BX270-30
| 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 SAIJ100BX270-30 Is Used
Product Changeovers
Dial in the 240-270mm travel window during product size transitions to set new retract positions without replacing the cylinder.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to achieve exact alignment without external shims.
Assembly Pressing
Leverage 3927N of push force at 0.5MPa for pressing operations while retaining the ability to trim the stroke by up to 30mm.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-30 the Right Cylinder?
Choose this 100mm bore when 50mm (982N at 0.5MPa) is too weak but you want to avoid the larger 125mm size. The adjustable 240-270mm travel window is selected over a fixed SAI cylinder when machinery requires variable end-stops for product changeovers. At 270mm stroke, the 25mm rod provides good rigidity, but an external guide is recommended to prevent side-load wear on the seals.
To match this ISO 15552 interchangeable cylinder exactly, specify: 100mm bore, 270mm stroke, 30mm adjustment, PT tapered port threads, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and SUS304 (B) rod material. Note that SAIJ omits the FB, CA, CB, and CR mountings. The operating speed range is 30-800mm/s.
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 SAIJ100BX270-30 FAQ
It features a rear adjuster that shortens the 270mm nominal stroke by up to 30mm, providing a 240-270mm usable travel window for fine-tuning the end position.
At 0.5MPa operating pressure, it provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
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Standard models usually ship in 3-4 days.
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