External dimensions（mm)
| d | 34.925 |
| D | 79.375 |
| T | 29.37 |
| B | 29.771 |
| C | 23.812 |
Inner ring
γ(minimum) | 3.5 |
Outer Ring
γ(minimum) | 3.3 |
Bearing code
| Inner ring | 3478 |
| Outer Ring | 3420 |
Installation size (mm)
| da | 50 |
| db | 43.5 |
| da | 67 |
| db | 74 |
| Inner circle γa（maximum） | 3.5 |
| Outer circle γa（maximum） | 3.3 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.448 |
| Outer Ring | 0.259 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
