External dimensions（mm)
| D2 | 30 |
| d | 40 |
| D | 90 |
| t1 | 65 |
| T5 | 69.4 |
| T7 | 77 |
γ
(minimum) | 1.1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52408 |
Heart regulating ball
Facial shape | 54408 |
Spherical seat
loop type | 54408U |
size（mm)
| d3 | 90 |
| d1 | 42 |
| D2 | 65 |
| d3 | 95 |
| T2 | 40 |
| T6 | 42.2 |
| T8 | 46 |
| B | 15 |
| B | 12 |
| A1 | 22 |
| R | 72 |
Installation size(mm)
da
(maximum） | 65 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 1.98 |
Heart regulating ball
Facial shape | 2.02 |
Spherical seat
loop type | 2.54 |
describe
52408 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
