Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 475mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S
The AirTAC SAIJ80X475-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. Its built-in stopper allows you to fine-tune the effective travel anywhere within a 435-475mm window, which is ideal for dialing in exact end positions during machine commissioning without adding external stops. This configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a -S magnet for position sensing.
Featuring a G3/8 port and a robust 25mm rod, this unit handles dynamic loads up to 800mm/s while utilizing adjustable air cushions at both ends to decelerate the payload smoothly. The rear adjuster acts strictly as a travel stop to set the retraction endpoint, not as a locking device, meaning live air pressure is required to hold the load in place. For applications needing true load-holding without air, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 475 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×475 | 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 SAIJ80BX475-40S Is Used
Product Changeover
Quickly dial in the 435-475mm retraction stop during packaging line format changes without swapping out the entire actuator.
Machine Setup
Fine-tune the exact end-of-stroke position during initial commissioning to prevent crashes and optimize tooling alignment.
Variable End Stops
Accommodate multiple material lengths on a single conveyor by adjusting the rear stopper screw up to 40mm as needed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-40S the Right Cylinder?
Selecting this 80mm bore cylinder makes sense when your application requires the 2513N thrust at 0.5 MPa (or 3518N at 0.7 MPa) but demands on-the-fly end-position tuning within that 435-475mm range. If your setup only needs 1402N of pull force, stepping down to a 63mm bore saves space, while moving up to a 100mm bore provides 3927N if your payload increases. Because the 475mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the rod.
When replacing an ISO 15552 cylinder, verify the 80mm bore, 475mm nominal stroke, 40mm adjustment range, PT tapered port threads, and the -S magnet requirement. This SAIJ variant supports mounting sets Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits FB, CA, CB, and CR brackets. 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 SAIJ80 Adjustable Cylinder SAIJ80BX475-40S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 3518N.
The rear adjuster screw allows you to shorten the nominal 475mm stroke by up to 40mm, creating a usable travel window of 435-475mm. The adjuster functions as a mechanical stop to set the end position and does not lock the load without live air pressure.
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