External dimensions（mm)
| D2 | 75 |
| d | 90 |
| D | 155 |
| t1 | 88 |
| T5 | 97.2 |
| T7 | 106 |
γ
(minimum) | 1.5 |
| γ1(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 52318 |
Heart regulating ball
Facial shape | 54318 |
Spherical seat
loop type | 54318U |
size（mm)
| d3 | 155 |
| d1 | 93 |
| D2 | 120 |
| d3 | 160 |
| T2 | 53.5 |
| T6 | 58.1 |
| T8 | 62.5 |
| B | 19 |
| B | 18 |
| A1 | 36.5 |
| R | 112 |
Installation size(mm)
da
(maximum） | 120 |
γa
(maximum) | 1.5 |
γb
(maximum) | 1 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 6.79 |
Heart regulating ball
Facial shape | 7.33 |
Spherical seat
loop type | 9.29 |
describe
52318 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
