External dimensions（mm)
| d | 360 |
| D | 500 |
| T | 110 |
| T3 | 116.7 |
| T4 | 130 |
γ
(minimum) | 4 |
Bearing code
Flat bottomed seat
loop type | 51272X |
Heart regulating ball
Face seat | 53272X |
Spherical seat
loop type | 53272XU |
size（mm)
| d1 | 495 |
| d1 | 365 |
| D2 | 430 |
| d3 | 510 |
| B | 43 |
| A | 172 |
| R | 360 |
Installation size(mm)
Da
(minimum） | 442 |
da
(maximum） | 418 |
γa
(maximum) | 3 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 68.8 |
Heart regulating ball
Facial shape | 76.3 |
Spherical seat
loop type | 90.9 |
describe
51272X Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
