External dimensions（mm)
| D2 | 80 |
| d | 100 |
| D | 210 |
| t1 | 150 |
| T5 | 160 |
| T7 | 176 |
γ
(minimum) | 3 |
| γ1(minimum) | 1.1 |
Bearing code
Flat bottomed seat
loop type | 52420X |
Heart regulating ball
Facial shape | 54420X |
Spherical seat
loop type | 54420XU |
size（mm)
| d3 | 209.5 |
| d1 | 103 |
| D2 | 155 |
| d3 | 220 |
| T2 | 91.5 |
| T6 | 96.5 |
| T8 | 104.5 |
| B | 33 |
| B | 27 |
| A1 | 43.5 |
| R | 160 |
Installation size(mm)
da
(maximum） | 155 |
γa
(maximum) | 2.5 |
γb
(maximum) | 1 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 26.8 |
Heart regulating ball
Facial shape | 27.2 |
Spherical seat
loop type | 33.4 |
describe
52420X Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
