NSK Deep Groove Ball Bearings 6924 ,Single Row D=120 RIDGID HWASHIN Tree Pruner S 650 519 9628 HWASHIN Tree Pruner S 650 Product name Aurora LIGHT 10m ID 7 due to contact seal Speed capability Good Good Limited by contact seals Grease sealing effectiveness Good Better than ZZ type Slightly better than VV type Dust resistance Good Better than ZZ type (usable in moderately dusty environments) Best (usable even in very dusty environments) Water resistance Not suitable Not suitable Good (usable even if fluid is splashed on bearing) Operating temperature –10 to +110 °C –10 to +110 °C –10 to +110 °C Note (1) The above temperature range applies to standard bearings Single row deep groove ball bearings are classified into the types shown below