External dimensions
(mm)
| d | 105 |
| D | 225 |
| B | 49 |
| γ(minimum) | 3 |
Rated speed min-1
grease
Open type
Z·ZZ-shaped
V·VV type | 2600 |
Open type
DU type
DDU type | 2000 |
Bearing code
| Open type | 6321 |
| dust cover | ZZ |
Non contact
Sealed loop type | — |
| Contact sealing loop type | DDU |
| Equipped with a stop ring groove | — |
| Equipped with a stop ring | — |
Stop ring groove size(1)
(mm)
a
(maximum) | — |
b
(minimum) | — |
D1
(maximum) | — |
γo
(maximum) | — |
γN
(minimum) | — |
Installation size
(mm)
da
(maximum） | 138 |
Da
(maximum) | 212 |
γa
(maximum) | 2.5 |
Dx
(minimum) | — |
CY
(maximum) | — |
describe
Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways
