Needle roller and cage assemblies are single or double row units comprising cages and needle rollers. \n\nsince their radial section is no greater than the diameter of the needle rollers, needle roller and cage assemblies allow bearing arrangements with a very small radial design envelope to be achieved. they have very high load carrying capacity, are suitable for high speeds and can be easily fitted.\n\nif the raceways are produced to high geometrical accuracy, bearing arrangements with high runout accuracy can be achieved. the radial internal clea.