... series, etc 4.Quality: ABEC-1, 3, 5, Z1V1 Z2V2 Z3V3, EMQ5.Material: Chrome steel, stainless steel,Carbon steel6.Quality standard: ISO9001:2000 ... 150mm self-aligning roller bearing,high quality-China bearings in factory stock Guangzhou Xinbeilin Bearing Co., Ltd. http:// ... .alibaba.com/ diameter 150mm, self-aligning roller bearing,high quality-China bearings in factory stock diameter 150mm,self ...