External dimensions（mm)
| d | 61.912 |
| D | 152.4 |
| T | 47.625 |
| B | 46.038 |
| C | 31.75 |
Inner ring
γ(minimum) | 3.5 |
Outer Ring
γ(minimum) | 3.3 |
Bearing code
| Inner ring | 9180 |
| Outer Ring | 9121 |
Installation size (mm)
| da | 90 |
| db | 81 |
| da | 130 |
| db | 145 |
| Inner circle γa（maximum） | 3.5 |
| Outer circle γa（maximum） | 3.3 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 2.77 |
| Outer Ring | 1.21 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
