SKF double row full complement cylindrical roller bearings are non-separable and have an annular groove and three lubrication holes in the outer ring to facilitate lubrication. NNF design bearings have three additional lubrication holes in the inner ring. This bearing has a two-piece inner ring and is held together by a retaining ring with three integral flanges. They have one integral central flange on the outer ring and are used to locate the shaft axially in both directions. They can accommodate tilting moments because of the distance between the two rows of rollers and have an outer ring that is 1 mm narrower than the inner ring. This bearing does not require spacer rings between the inner ring and adjacent components, in applications with a rotating outer ring. They have two snap ring grooves in the outer ring.
