Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX280-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S
The AirTAC SAIJ100X280-20-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you achieve a usable travel window of 260 to 280 mm, allowing precise end-position tuning at commissioning without adding external stops.
This adjustable-stroke variant uses a PT tapered port and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel provides standard ISO 15552 mounting dimensions, while the rear adjuster acts strictly as a travel stop to set deceleration, not as a lock to hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S
| 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 SAIJ100BX280-20S Is Used
Machine Setup & Changeover
Fine-tune the 260-280mm end position during product size changes on a packaging line, using the rear screw to adapt travel without mechanical rebuilds.
Variable End Stops
Adjust the retract stroke on diverter gates to handle different package lengths on the fly, ensuring precise routing without replacing the actuator.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-20S the Right Cylinder?
The 20mm adjustment range is ideal for product changeovers on a line, letting you dial in the exact 260-280mm travel window without swapping the whole cylinder for a fixed-stroke SAI model.
Because the 280mm stroke exceeds 300mm is not triggered here, but long unsupported strokes still benefit from an external guide to manage side-load. Remember that the rear adjuster and air cushions only manage travel ends; for load-holding without live pressure, select an SAIL pneumatic lock or BSAI clamp-lock cylinder. Ensure your ISO 15552 replacement matches the PT port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting set, and the -S magnet requirement.
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 SAIJ100BX280-20S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to trim the nominal 280mm stroke back by up to 20mm. This creates a usable travel window of 260 to 280mm for fine-tuning end positions without replacing the cylinder.
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Standard models are processed and dispatched in 3-5 business days.
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