1. Product Overview NJ217-E-XL-M1 is single row cylindrical roller bearing with metric dimension 85×150×28mm. NJ structure features double fixed ribs on outer ring and single rib on inner ring, realizing one-way axial shaft positioning while allowing slight axial sliding on the opposite side. E stands for logarithmic crowned rollers to eliminate edge pressure under heavy load; XL refers to upgraded internal geometry for improved load rating; M1 represents solid machined brass