... guidethe parallel axis line of needle roller. NN3011 High Precision Needle Roller Bearings,chrome and carbon steel bearing,chrome steel ... )3.Model Number: 60xx, 62xx, 63xx, 64xx, 16xxx, 16xx, R series, etc 4.Quality: ABEC-1, 3, 5, Z1V1 Z2V2 ... Cage material: Nylon steel brass8.Application: Auto, tractor, machine tool, electric machine, water pump, agricultural machinery and textile machinery9.High-speed ...