... 3.High quality 4.ISO 9000/900/2000 StructureDeep groove ball bearingTypeBallBrand NameASAHI, ASK, FAFNIR, FAG, FYH, GMN, HRB, IKO, INA ... or two sides metal shields Z, ZZ (3)Deep Groove Ball Bearing mainly take radial load as well as take moderate ... coefficient of triction, high limiting speed, large size rang and colorful combination of structure; they are suitable for tractors, motors, automobiles ...