Deep groove ball bearings mainly take radial load as well as take moderate axial load.With less coefficient of triction,high limiting speed,large size rang and colorful combination of structure; they are suitable for tractors,motors,automobiles,motorcyclees,and other common machinery,as a widely used type of bearings in machinery industry INCLUDE: 6010~6036(zz or 2rs), 6206~6230(zz or 2rs), 6305~6330(zz or 2rs). Tolerance Rating:ABEC-1,ABEC-2,ABEC-5