External dimensions（mm)
| d | 50.8 |
| D | 92.075 |
| T | 24.608 |
| B | 25.4 |
| C | 19.845 |
Inner ring
γ(minimum) | 3.5 |
Outer Ring
γ(minimum) | 0.8 |
Bearing code
| Inner ring | 28580 |
| Outer Ring | 28521 |
Installation size (mm)
| da | 63 |
| db | 57 |
| da | 83 |
| db | 87 |
| Inner circle γa（maximum） | 3.5 |
| Outer circle γa（maximum） | 0.8 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.46 |
| Outer Ring | 0.247 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
