NSK Deep Groove Ball Bearings 6217VV ,Single Row D=85 Insulated Precision Screwdriver Set We succeeded in weight reduction Spiral Flute Tap (for Hard to Cut Materials) We succeeded in weight reduction and cutting performance improvement NSK Deep Groove Ball Bearings 6212VV 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 (kN) Limiting Speeds