2013 High Quality Spherical Roller Bearings 1.High precision & quality 2.ISO 9001 certified 3.Low noise,Stable chemical 2013 High Quality Spherical Roller Bearings Material: chrome steel STEEL NO.COMPONENTCSiMnCrMoPS CuNiGCr150.95 ... )4) Noise Level: Z2V1, Z3V2 , Z4V35) Application: Caster bearings, Home Appliance bearings, Electric Motor bearings, 6) Material: Chrome steel 157) Long life and ...