NSK double row self-aligning roller bearing 1,ISO 9001 2,durable,long life,high precision 3, ... competitive price 4,OEM offered NSk double row self-aligning ... ,China(mainland)HardnessHRC60-65Presion ratingP0,P5,P6MaterialChrome steel,Carton steel,bearing steal,ect.Functiontake combined loading (consists of radial and axial ...