... .ISO9000:2001 5.Small friction coefficient 1.NJ 303Cylindrical roller bearing/roller bearing NJ 303NJ 304NJ 305NJ 306NJ 307NJ 308NJ 309NJ 310NJ ... /SKF/NACHI and other Chinese brands.3.Features:Cylindrical roller bearing mainly bears radial load.Small friction coefficient, suitable for high ... pressed steel, copper alloy,4.Types:Single row cylindrical roller bearing: N, NU, NJ, NF, NUP, NFP,NH(NJ+HJ) ...