External dimensions（mm)
| d | 28.575 |
| D | 57.15 |
| T | 19.845 |
| B | 19.355 |
| C | 15.875 |
Inner ring
γ(minimum) | 3.5 |
Outer Ring
γ(minimum) | 1.5 |
Bearing code
| Inner ring | 1988 |
| Outer Ring | 1922 |
Installation size (mm)
| da | 39.5 |
| db | 33.5 |
| da | 51 |
| db | 53.5 |
| Inner circle γa（maximum） | 3.5 |
| Outer circle γa（maximum） | 1.5 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.141 |
| Outer Ring | 0.077 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
