External dimensions（mm)
| D2 | 45 |
| d | 55 |
| D | 90 |
| t1 | 45 |
| T5 | 49.6 |
| T7 | 55 |
γ
(minimum) | 1 |
| γ1(minimum) | 0.6 |
Bearing code
Flat bottomed seat
loop type | 52211 |
Heart regulating ball
Facial shape | 54211 |
Spherical seat
loop type | 54211U |
size（mm)
| d3 | 90 |
| d1 | 57 |
| D2 | 72 |
| d3 | 95 |
| T2 | 27.5 |
| T6 | 29.8 |
| T8 | 32.5 |
| B | 10 |
| B | 9 |
| A1 | 32.5 |
| R | 72 |
Installation size(mm)
da
(maximum） | 72 |
γa
(maximum) | 1 |
γb
(maximum) | 0.6 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 1.11 |
Heart regulating ball
Facial shape | 1.22 |
Spherical seat
loop type | 1.55 |
describe
52211 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
