External dimensions（mm)
| d | 85 |
| D | 125 |
| T | 31 |
| T3 | 33.1 |
| T4 | 37 |
γ
(minimum) | 1 |
Bearing code
Flat bottomed seat
loop type | 51217 |
Heart regulating ball
Face seat | 53217 |
Spherical seat
loop type | 53217U |
size（mm)
| d1 | 125 |
| d1 | 88 |
| D2 | 105 |
| d3 | 130 |
| B | 11 |
| A | 52 |
| R | 100 |
Installation size(mm)
Da
(minimum） | 109 |
da
(maximum） | 101 |
γa
(maximum) | 1 |
weight(kg)(refer to)
Flat bottomed seat
loop type | 1.22 |
Heart regulating ball
Facial shape | 1.35 |
Spherical seat
loop type | 1.63 |
describe
51217 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
