External dimensions（mm)
| d | 75 |
| D | 135 |
| T | 44 |
| T3 | 48.1 |
| T4 | 52 |
γ
(minimum) | 1.5 |
Bearing code
Flat bottomed seat
loop type | 51315 |
Heart regulating ball
Face seat | 53315 |
Spherical seat
loop type | 53315U |
size（mm)
| d1 | 135 |
| d1 | 77 |
| D2 | 105 |
| d3 | 140 |
| B | 15 |
| A | 37 |
| R | 100 |
Installation size(mm)
Da
(minimum） | 111 |
da
(maximum） | 99 |
γa
(maximum) | 1.5 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 2.6 |
Heart regulating ball
Facial shape | 2.8 |
Spherical seat
loop type | 3.42 |
describe
51315 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
