External dimensions（mm)
| D2 | 35 |
| d | 45 |
| D | 73 |
| t1 | 37 |
| T5 | 39.6 |
| T7 | 45 |
γ
(minimum) | 1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52209 |
Heart regulating ball
Facial shape | 54209 |
Spherical seat
loop type | 54209U |
size（mm)
| d3 | 73 |
| d1 | 47 |
| D2 | 60 |
| d3 | 78 |
| T2 | 23 |
| T6 | 24.3 |
| T8 | 27 |
| B | 9 |
| B | 7.5 |
| A1 | 23 |
| R | 56 |
Installation size(mm)
da
(maximum） | 60 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 0.606 |
Heart regulating ball
Facial shape | 0.652 |
Spherical seat
loop type | 0.823 |
describe
52209 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
