External dimensions（mm)
| d | 140 |
| D | 180 |
| T | 31 |
| T3 | — |
| T4 | — |
γ
(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 51128X |
Heart regulating ball
Face seat | — |
Spherical seat
loop type | — |
size（mm)
| d1 | 178 |
| d1 | 142 |
| D2 | — |
| d3 | — |
| B | — |
| A | — |
| R | — |
Installation size(mm)
Da
(minimum） | 164 |
da
(maximum） | 156 |
γa
(maximum) | 1 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 1.83 |
Heart regulating ball
Facial shape | — |
Spherical seat
loop type | — |
describe
51128X Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
