External dimensions（mm)
| d | 90 |
| D | 155 |
| T | 50 |
| T3 | 54.6 |
| T4 | 59 |
γ
(minimum) | 1.5 |
Bearing code
Flat bottomed seat
loop type | 51318 |
Heart regulating ball
Face seat | 53318 |
Spherical seat
loop type | 53318U |
size（mm)
| d1 | 155 |
| d1 | 93 |
| D2 | 120 |
| d3 | 160 |
| B | 18 |
| A | 40 |
| R | 112 |
Installation size(mm)
Da
(minimum） | 129 |
da
(maximum） | 116 |
γa
(maximum) | 1.5 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 3.83 |
Heart regulating ball
Facial shape | 4.11 |
Spherical seat
loop type | 5.09 |
describe
51318 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
