External dimensions（mm)
| D2 | 35 |
| d | 45 |
| D | 100 |
| t1 | 72 |
| T5 | 78.8 |
| T7 | 86 |
γ
(minimum) | 1.1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52409 |
Heart regulating ball
Facial shape | 54409 |
Spherical seat
loop type | 54409U |
size（mm)
| d3 | 100 |
| d1 | 47 |
| D2 | 72 |
| d3 | 105 |
| T2 | 44.5 |
| T6 | 47.9 |
| T8 | 51.5 |
| B | 17 |
| B | 12.5 |
| A1 | 23.5 |
| R | 80 |
Installation size(mm)
da
(maximum） | 72 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 2.71 |
Heart regulating ball
Facial shape | 2.85 |
Spherical seat
loop type | 3.53 |
describe
52409 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
