External dimensions（mm)
| d | 50 |
| D | 78 |
| T | 22 |
| T3 | 23.5 |
| T4 | 26 |
γ
(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 51210 |
Heart regulating ball
Face seat | 53210 |
Spherical seat
loop type | 53210U |
size（mm)
| d1 | 78 |
| d1 | 52 |
| D2 | 62 |
| d3 | 82 |
| B | 7.5 |
| A | 32.5 |
| R | 64 |
Installation size(mm)
Da
(minimum） | 67 |
da
(maximum） | 61 |
γa
(maximum) | 1 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 0.378 |
Heart regulating ball
Facial shape | 0.404 |
Spherical seat
loop type | 0.504 |
describe
51210 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
