... heavy loads 1 High quality and good service2 Less coefficient of friction3 Competitive price4 Variations of structure :A) Machined Type Needle roller bearing NA49, NA59 ... ,M,MH,HK...OH,etcD) Drawn Cup Needle Roller ClutchesHF,HFL,RC,FC,FCB, etc5 Material: chrome steelNeedle Roller Bearing HK 0810 Features: 1) High strength designed ...