External dimensions（mm)
| D2 | 40 |
| d | 50 |
| D | 78 |
| t1 | 39 |
| T5 | 42 |
| T7 | 47 |
γ
(minimum) | 1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52210 |
Heart regulating ball
Facial shape | 54210 |
Spherical seat
loop type | 54210U |
size（mm)
| d3 | 78 |
| d1 | 52 |
| D2 | 62 |
| d3 | 82 |
| T2 | 24 |
| T6 | 25.5 |
| T8 | 28 |
| B | 9 |
| B | 7.5 |
| A1 | 30.5 |
| R | 64 |
Installation size(mm)
da
(maximum） | 62 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 0.697 |
Heart regulating ball
Facial shape | 0.75 |
Spherical seat
loop type | 0.949 |
describe
52210 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
