External dimensions（mm)
| d | 22.225 |
| D | 57.15 |
| T | 22.225 |
| B | 22.225 |
| C | 17.462 |
Inner ring
γ(minimum) | 0.8 |
Outer Ring
γ(minimum) | 1.5 |
Bearing code
| Inner ring | 1280 |
| Outer Ring | 1220 |
Installation size (mm)
| da | 29.5 |
| db | 29 |
| da | 49 |
| db | 52 |
| Inner circle γa（maximum） | 0.8 |
| Outer circle γa（maximum） | 1.5 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.183 |
| Outer Ring | 0.106 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
