Specifications Deep Groove Ball Bearing 1.Simple structure, the most widely used bearing 2.Low friction, high speed. Packaging & Delivery Packaging ... Groove Ball Bearing 1.Simple structure, the most widely used bearing 2.Low friction, high speed.Deep Groove Ball BearingDeep groove ball bearings ... ZZ, RS, 2RS, N, NR, ZNR etc.Material: Chrome Steel ( GCr15=DIN 100Cr6 )Precision: ABEC-1(P0), ABEC-3(P6 ...