NSK high precision taper roller bearing 33020 bearing (1)12 year's experience (2) ISO9001:2000 (3) Best Price We ... are professional company which can supply all kinds of bearings.Bearings:1 ... *150*39mmMass2.33kgMaterialGCr15(chrome steel), GCr15SiMnCageBrass, steelTolerance ratingABEC-1,ABEC-3,ABEC-5Vibration ratingV1,V2,V3Noises ratingZ1,Z2, ...