External dimensions（mm)
| d | 45.23 |
| D | 79.985 |
| T | 19.842 |
| B | 20.638 |
| C | 15.08 |
Inner ring
γ(minimum) | 2 |
Outer Ring
γ(minimum) | 1.3 |
Bearing code
| Inner ring | 17887 |
| Outer Ring | 17831 |
Installation size (mm)
| da | 57 |
| db | 52 |
| da | 68 |
| db | 74 |
| Inner circle γa（maximum） | 2 |
| Outer circle γa（maximum） | 1.3 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.274 |
| Outer Ring | 0.136 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
