External dimensions（mm)
| d | 140 |
| D | 280 |
| T | 112 |
| T3 | 117 |
| T4 | 131 |
γ
(minimum) | 4 |
Bearing code
Flat bottomed seat
loop type | 51428X |
Heart regulating ball
Face seat | 53428X |
Spherical seat
loop type | 53428XU |
size（mm)
| d1 | 275 |
| d1 | 144 |
| D2 | 206 |
| d3 | 290 |
| B | 38 |
| A | 83 |
| R | 225 |
Installation size(mm)
Da
(minimum） | 222 |
da
(maximum） | 198 |
γa
(maximum) | 3 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 34.7 |
Heart regulating ball
Facial shape | 34.8 |
Spherical seat
loop type | 41.4 |
describe
51428X Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
