Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S
The AirTAC SAIJ100X280-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel within a 230 to 280 mm window. Delivering 3927 N of push force at 0.5 MPa, it features a robust 25 mm rod and a PT tapered port thread. This specific configuration includes a SUS304 stainless steel rod (material code B) for superior corrosion resistance and is equipped with a magnet for position sensing.
Because the stroke is 280 mm, supporting the load with an external guide is recommended to prevent excessive side-loading on the rod. The rear adjuster acts purely as a travel stop to dial in end positions during commissioning; it is not a lock. For load-holding without live air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 280 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 SAIJ100BX280-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×280 | 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 SAIJ100BX280-50S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 230-280 mm window during machine commissioning to accommodate different material thicknesses without changing hardware.
Product Line Changeover
Quickly adjust the stroke stop on packaging or handling lines when switching between product sizes, minimizing downtime and avoiding external stop hardware.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in manufacturing environments where moisture or washdown is present, ensuring reliable positioning over a long service life.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or frequent product changeovers, eliminating the need to physically swap cylinders or bolt on external stops. If your application demands less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. If you need more push power, a 125 mm bore provides 6136 N.
When replacing an ISO 15552 cylinder, verify the 100 mm bore, 280 mm stroke, 50 mm adjustment range, PT port thread, and the -S magnet option. The SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR variants found on some standard cylinders. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors.
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 SAIJ100BX280-50S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 50 mm. This provides a usable travel window of 230 to 280 mm, allowing precise end-position tuning at commissioning without swapping the cylinder.
At a 0.5 MPa operating pressure, the SAIJ100X280-50-S provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf of thrust.
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