External dimensions（mm)
| d | 45 |
| D | 100 |
| T | 39 |
| T3 | 42.4 |
| T4 | 46 |
γ
(minimum) | 1.1 |
Bearing code
Flat bottomed seat
loop type | 51409 |
Heart regulating ball
Face seat | 53409 |
Spherical seat
loop type | 53409U |
size（mm)
| d1 | 100 |
| d1 | 47 |
| D2 | 72 |
| d3 | 105 |
| B | 12.5 |
| A | 29 |
| R | 80 |
Installation size(mm)
Da
(minimum） | 78 |
da
(maximum） | 67 |
γa
(maximum) | 1 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 1.46 |
Heart regulating ball
Facial shape | 1.53 |
Spherical seat
loop type | 1.87 |
describe
51409 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
