External dimensions（mm)
| d | 63.5 |
| D | 140.03 |
| T | 36.512 |
| B | 33.236 |
| C | 23.52 |
Inner ring
γ(minimum) | 2.3 |
Outer Ring
γ(minimum) | 2.3 |
Bearing code
| Inner ring | 78250 |
| Outer Ring | 78551 |
Installation size (mm)
| da | 85 |
| db | 79 |
| da | 117 |
| db | 132 |
| Inner circle γa（maximum） | 2.3 |
| Outer circle γa（maximum） | 2.3 |
Location of
action point(mm)
weight（kg）
（refer to）
| Inner ring | 1.51 |
| Outer Ring | 0.926 |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
