ISO mounting bases play a crucial role in the seamless integration of electric actuators and valves, serving as the foundation for a secure and standardized attachment. As an OEM electric actuator supplier, our products are designed with precision and adherence to international standards. The ISO mounting bases serve as a universal interface, ensuring compatibility across various actuator models and sizes. These bases are engineered to facilitate easy installation, enhancing the efficiency of the actuation process. With standardized dimensions, users can confidently interchange actuators without the need for extensive modifications. In our comprehensive lineup, we offer a range of ISO mounting bases in different sizes to accommodate diverse industrial applications, providing flexibility and reliability in the integration of electric valve and damper actuators.
The dimensions for ISO5211 are shown below:

Flange Type | D1 (PCD) | D2 | No. of bolts or studs |
F03 | 36 | M5 | 4 |
F04 | 42 | M5 | 4 |
F05 | 50 | M6 | 4 |
F07 | 70 | M8 | 4 |
F10 | 102 | M10 | 4 |
F12 | 125 | M12 | 4 |
F14 | 140 | M16 | 4 |
F16 | 165 | M20 | 4 |
F25 | 254 | M16 | 8 |
F30 | 198 | M20 | 8 |
F35 | 356 | M30 | 8 |
F40 | 406 | M36 | 8 |
F48 | 483 | M36 | 12 |
F60 | 603 | M36 | 20 |

Flange Type | a/2 |
F03 to F16 | 45° |
F25 to F40 | 22.5° |
F48 | 15° |
F60 | 9° |
For complete standards and more information visit https://www.iso.org/standard/86753.html.