Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- 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 SAIJ80 Adjustable Cylinder SAIJ80BX275-20S
The AirTAC SAIJ80X275-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract position. With a nominal 275 mm stroke and a 20 mm adjustment range, it provides a usable travel window of 255 to 275 mm.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and an integrated magnet (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. You can fine-tune the end position at commissioning without adding external stops, while the PT G3/8 ported body maintains standard ISO 15552 mounting dimensions.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80BX275-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX275-20S Is Used
Product Changeover
Dial in the 255-275 mm retract window during format size changes on a packaging line without physically replacing the actuator.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to perfect tooling alignment and avoid hard mechanical crashes.
Variable End Stops
Adjust the retract distance on the fly for sorting diverter arms that need to accommodate different carton depths on a single conveyor.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-20S the Right Cylinder?
The adjustable 255-275 mm travel window is ideal for product changeovers on a packaging line, letting you dial in the exact retract distance without swapping the cylinder. Because the 275 mm stroke is substantial, ensure your setup includes an external guide to handle side loads, as the 25 mm SUS304 rod is built for durability but cannot support heavy lateral forces alone.
When specifying a replacement, match the 80 mm bore, 275 mm stroke, 20 mm adjustment, PT G3/8 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For dead-load holding, use an external rod lock or explore AirTAC SAIL or BSAI series cylinders.
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 SAIJ80 Adjustable Cylinder SAIJ80BX275-20S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 255 to 275 mm, allowing you to fine-tune the retract position without changing the cylinder or adding external stops.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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