External dimensions（mm)
| d | 8 |
| D | 24 |
| B | 8 |
| B1 | 8 |
| γ(minimum) | 0.3 |
| γ1(minimum) | 0.3 |
Rated speed min-1
grease
Z·ZZ
V·VV | 146 |
| D·DD | 24000 |
| oilZ | 34000 |
Bearing code
| Open type | 628 |
| dust cover type | 628ZZ |
Non contact
sealed | VV |
| Contact sealed | DD |
Installation size(mm)
| da（minimum） | 10 |
| db(maximum） | 12 |
| da(maximum） | 22 |
| Db(minimum) | 20.5 |
| γa（maximum） | 0.3 |
| γb(maximum） | 0.3 |
weight(g)(refer to)
| Open type | 17.2 |
| dust cover type | 17.4 |
describe
628 Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
