1.Ball bearing.Roller bearing. hub bearing 2.material,steel GCR - 15 3.Quality authentication ISO 9001:2000 4.Hardness:62 ... % L/C At Sight ApplicationHome appliances, low noise and high speed electric motors, automotive components, pumps, machinery. ServiceOEM ... packagingNU NUP , Nj ,HaoYang bearingBall bearingRoller bearingAuto-hub bearing 1,Staff mission: to develop, innovation, cooperation and ...