External dimensions（mm)
| d | 65 |
| D | 100 |
| T | 27 |
| T3 | 28.7 |
| T4 | 32 |
γ
(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 51213 |
Heart regulating ball
Face seat | 53213 |
Spherical seat
loop type | 53213U |
size（mm)
| d1 | 100 |
| d1 | 67 |
| D2 | 82 |
| d3 | 105 |
| B | 9 |
| A | 40 |
| R | 80 |
Installation size(mm)
Da
(minimum） | 86 |
da
(maximum） | 79 |
γa
(maximum) | 1 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 0.756 |
Heart regulating ball
Facial shape | 0.812 |
Spherical seat
loop type | 0.989 |
describe
51213 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
