Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-20 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 SAIJ100BX270-20
The AirTAC SAIJ100X270-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa and provides a usable travel window of 250 to 270mm, letting you trim the effective stroke by up to 20mm during commissioning. This cylinder uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads.
Equipped with variable air cushions at both ends, this extruded aluminum barrel design includes integrated sensor grooves on two sides for flexible positioning detection. The rear stopper mechanism allows precise end-position tuning without adding external stops, though it acts only as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-20 |
|---|---|
| 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 SAIJ100BX270-20
| 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 SAIJ100BX270-20 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within a 250-270mm window during machine commissioning without physically swapping out cylinders.
Product Size Changeover
Quickly adapt automated line tooling to accommodate varying package dimensions by adjusting the stroke end-point on the fly.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for reliable performance in manufacturing environments requiring high cleanliness and rust prevention.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-20 the Right Cylinder?
Choose this adjustable SAIJ model over a fixed-stroke SAI when your application requires frequent product-size changeovers or fine end-position tuning at setup. If you need less force, stepping down to an 80mm bore yields 3518N of push at 0.7 MPa, while a 125mm bore provides 8590N for heavier loads. To match this exact ISO 15552 replacement, retain the 100mm bore, 270mm stroke, 20mm adjustment, PT port threads, and the SUS304 (B) rod material.
Because the nominal stroke is 270mm, ensure proper external guidance to prevent excessive side-loading on the rod. This SAIJ supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. For any load-holding requirements without continuous air pressure, consider the SAIL or BSAI series instead, as the rear adjuster is not a locking device.
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 SAIJ100BX270-20 FAQ
At an operating pressure of 0.7 MPa, this 100mm bore double-acting cylinder generates 5497N of push force and 3681N of pull force.
The rear adjuster acts as a mechanical stop that lets you shorten the 270mm nominal stroke by up to 20mm, providing an effective travel range of 250 to 270mm for fine-tuning end positions.
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