... roller bearings 2.bears radial load 3.Small friction coefficient 4.ISO9000:2001 5.OEM is ok 1.KOYO N 306Cylindrical roller ... bears radial load.Small friction coefficient, suitable for high speed.N and NU types can move axially.Inner or outer ring ... , copper alloy,4.Types:Single row cylindrical roller bearing: N, NU, NJ, NF, NUP, NFP,NH(NJ+HJ)Double row cylindrical roller ...