External dimensions（mm)
| D2 | 30 |
| d | 35 |
| D | 68 |
| t1 | 44 |
| T5 | 47.2 |
| T7 | 52 |
γ
(minimum) | 1 |
| γ1(minimum) | 0.3 |
Bearing code
Flat bottomed seat
loop type | 52307 |
Heart regulating ball
Facial shape | 54307 |
Spherical seat
loop type | 54307U |
size（mm)
| d3 | 68 |
| d1 | 37 |
| D2 | 52 |
| d3 | 72 |
| T2 | 27 |
| T6 | 28.6 |
| T8 | 31 |
| B | 10 |
| B | 7.5 |
| A1 | 21 |
| R | 56 |
Installation size(mm)
da
(maximum） | 52 |
γa
(maximum) | 1 |
γb
(maximum) | 0.3 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 0.71 |
Heart regulating ball
Facial shape | 0.744 |
Spherical seat
loop type | 0.915 |
describe
52307 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
