Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50 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 SAIJ100BX280-50
The AirTAC SAIJ100X280-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 230 to 280 mm without swapping components. Delivering 3927 N of push force at 0.5 MPa and equipped with a robust 25 mm piston rod, it handles heavy loads with stability. The rod is constructed from SUS304 stainless steel (code B), offering excellent corrosion resistance for harsh or washdown environments.
This model uses PT (tapered) G1/2 ports and relies on adjustable air cushions at both ends to decelerate the payload smoothly. The rear adjuster acts strictly as a travel stop for end-position tuning during commissioning, not as a load-holding brake; for position holding without live air pressure, consider the SAIL or BSAI series. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50 |
|---|---|
| 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 SAIJ100BX280-50
| 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 SAIJ100BX280-50 Is Used
Variable End-Stop Forming
Dial in the exact 230 to 280 mm travel window during machine setup to accommodate different material thicknesses without changing the cylinder.
Product Diversion
Adjust the rear stopper on the fly for varying package sizes on a conveyor line, ensuring precise routing without mechanical rebuilds.
Commissioning Tuning
Fine-tune the retract end-position during initial commissioning to perfectly align heavy 3927 N press loads without external shims.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-50 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, generating 3927 N push and 3681 N pull at 0.5 MPa. If you need to step down to a lighter 80 mm bore, that yields 2513 N push force, while stepping up to a 125 mm bore provides 6136 N. The 50 mm adjustment range is ideal for product-size changeovers on a packaging line, letting operators dial in the exact end-stop on the fly rather than adding external spacers. When replacing an ISO 15552 cylinder, match the 280 mm nominal stroke, 50 mm adjust code, PT G1/2 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 280 mm stroke is moderately long, ensure external guides support any side loads to prevent rod binding.
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 SAIJ100BX280-50 FAQ
At a standard 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N push force at 0.9 MPa.
The rear adjuster screw lets you shorten the effective stroke by up to 50 mm, providing a usable travel window of 230 to 280 mm. It functions as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
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