External dimensions（mm)
| D2 | 70 |
| d | 90 |
| D | 190 |
| t1 | 135 |
| T5 | 143.4 |
| T7 | 157 |
γ
(minimum) | 2.1 |
| γ1(minimum) | 1.1 |
Bearing code
Flat bottomed seat
loop type | 52418X |
Heart regulating ball
Facial shape | 54418X |
Spherical seat
loop type | 54418XU |
size（mm)
| d3 | 189.5 |
| d1 | 93 |
| D2 | 140 |
| d3 | 195 |
| T2 | 82.5 |
| T6 | 86.7 |
| T8 | 93.5 |
| B | 30 |
| B | 25.5 |
| A1 | 34.5 |
| R | 140 |
Installation size(mm)
da
(maximum） | 140 |
γa
(maximum) | 2 |
γb
(maximum) | 1 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 17.5 |
Heart regulating ball
Facial shape | 18.1 |
Spherical seat
loop type | 22.5 |
describe
52418X Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
