External dimensions（mm)
| D2 | 15 |
| d | 20 |
| D | 40 |
| t1 | 26 |
| T5 | 27.4 |
| T7 | 32 |
γ
(minimum) | 0.6 |
| γ1(minimum) | 0.3 |
Bearing code
Flat bottomed seat
loop type | 52204 |
Heart regulating ball
Facial shape | 54204 |
Spherical seat
loop type | 54204U |
size（mm)
| d3 | 40 |
| d1 | 22 |
| D2 | 30 |
| d3 | 42 |
| T2 | 16 |
| T6 | 16.7 |
| T8 | 19 |
| B | 6 |
| B | 5 |
| A1 | 16 |
| R | 36 |
Installation size(mm)
da
(maximum） | 30 |
γa
(maximum) | 0.6 |
γb
(maximum) | 0.3 |
weight（kg）
（refer to）
Flat bottomed seat
loop type | 0.148 |
Heart regulating ball
Facial shape | 0.151 |
Spherical seat
loop type | 0.185 |
describe
52204 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
