External dimensions（mm)
| D2 | 75 |
| d | 90 |
| D | 135 |
| t1 | 62 |
| T5 | 69 |
| T7 | 76 |
γ
(minimum) | 1.1 |
| γ1(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 52218 |
Heart regulating ball
Facial shape | 54218 |
Spherical seat
loop type | 54218U |
size（mm)
| d3 | 135 |
| d1 | 93 |
| D2 | 110 |
| d3 | 140 |
| T2 | 38 |
| T6 | 41.5 |
| T8 | 45 |
| B | 14 |
| B | 13.5 |
| A1 | 42 |
| R | 100 |
Installation size(mm)
da
(maximum） | 110 |
γa
(maximum) | 1 |
γb
(maximum) | 1 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 3.09 |
Heart regulating ball
Facial shape | 3.42 |
Spherical seat
loop type | 4.39 |
describe
52218 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
