External dimensions（mm)
| D2 | 45 |
| d | 55 |
| D | 105 |
| t1 | 64 |
| T5 | 72.6 |
| T7 | 78 |
γ
(minimum) | 1.1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52311 |
Heart regulating ball
Facial shape | 54311 |
Spherical seat
loop type | 54311U |
size（mm)
| d3 | 105 |
| d1 | 57 |
| D2 | 80 |
| d3 | 110 |
| T2 | 39.5 |
| T6 | 43.8 |
| T8 | 46.5 |
| B | 15 |
| B | 11.5 |
| A1 | 25.5 |
| R | 80 |
Installation size(mm)
da
(maximum） | 80 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 2.43 |
Heart regulating ball
Facial shape | 2.7 |
Spherical seat
loop type | 3.35 |
describe
52311 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
