External dimensions（mm)
| d | 30.162 |
| D | 58.738 |
| T | 14.684 |
| B | 15.08 |
| C | 10.716 |
Inner ring
γ(minimum) | 3.5 |
Outer Ring
γ(minimum) | 1 |
Bearing code
| Inner ring | 8118 |
| Outer Ring | 8231 |
Installation size (mm)
| da | 41.5 |
| db | 35 |
| da | 52 |
| db | 55 |
| Inner circle γa（maximum） | 3.5 |
| Outer circle γa（maximum） | 1 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 0.12 |
| Outer Ring | 0.057 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
