Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75S 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 SAIJ100BX280-75S
The AirTAC SAIJ100X280-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel down to a 205-280 mm window without adding external stops. Equipped with a SUS304 stainless steel rod and a magnet for position sensing, it delivers a robust 7068N push force at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches for precise end-of-stroke detection.
This adjustable-stroke model uses a PT tapered port thread and operates at speeds between 30-800 mm/s. The rear adjuster functions strictly as a travel stop to decelerate the piston, not as a load-holding lock. For applications requiring position maintenance without live air pressure, integrating an external pilot-operated check valve or exploring the SAIL or BSAI series is recommended.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75S |
|---|---|
| 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 SAIJ100BX280-75S
| 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 SAIJ100BX280-75S Is Used
Machine Setup Changeover
Dial in the exact 205-280 mm end position during product size changeovers without physically swapping the cylinder or bolting on external stopper blocks.
Variable End-Stop Diverter
Fine-tune the retract stroke on a heavy conveyor diverter to accommodate different package lengths on the fly at commissioning.
Heavy Assembly Press
Utilize the 7068N push force to seat components securely, adjusting the final press depth accurately via the rear stopper screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75S the Right Cylinder?
Choose this 100 mm bore when your application requires heavy thrust up to 7068N at 0.9 MPa, but demands on-site commissioning flexibility to dial in the exact end position within a 205-280 mm range. If your force requirements are lower, stepping down to an 80 mm bore yields 4523N, whereas moving up to 125 mm provides 11045N. The SAIJ adjustable design is favored over a fixed-stroke SAI cylinder when accommodating product changeovers or varying end-stop distances on the same machine.
Because this unit features a 280 mm stroke, the 25 mm rod diameter provides substantial rigidity, though long unsupported loads still necessitate an external guide to prevent side-loading damage. When replacing an ISO 15552 cylinder, match the 100 mm bore, 280 mm nominal stroke, 75 mm adjustment range, PT port thread, and the -S magnet requirement. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX280-75S FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore double-acting cylinder generates a push force of 7068N and a pull force of 3681N.
The rear adjuster acts as an external stopper, allowing you to shorten the nominal 280 mm stroke by up to 75 mm, creating a usable travel window of 205-280 mm. It only sets the travel end and does not lock the load without live air pressure.
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