The flange slewing bearing has the same structure with four points contact ball slewing bearing, but the weight is lighter; the outer or inner ring of the flanged slewing bearing has the “L” edge, like a flange, that's why we called it flange type bearing. Flange light slewing bearing ring is Flange-Light Type Slewing Bearing also used for some applications which has weight limit for the bearing, the weight for the flange type slewing ring is much lower than normal type. The materials of the flange slewing ring are mainly 50Mn, 42CrMo and C45.The flange slewing bearing rings has been widely used in many applications.

The light weight flange slewing bearing has the same structure as the ordinary slewing bearing, except that the cross section of the inner and outer rings of this type of slewing bearing is the 'L' type. The assembly height of such a slewing bearing is usually not very high. The light weight design makes the light weight flanged slewing bearing  widely SKF snl 517 Bearing used in food machinery, filling machinery, and environmental protection machinery.

the Flange bearing is a special slewing ring bearing, it can have one flange in the outer ring, or one flanged bearing in the inner ring, even it can have one flange in both inner ring and outer ring.