Abstract: An improved sinker cam assembly for a circular knitting machine is disclosed which contains a series of cam segments attached to a stationary circular cam ring to form an endless undulating cam race. The assembly also includes a rotating sinker ring to which a plurality of sinkers are slidably attached for reciprocal movement as the sinker ring rotates relative to the cam ring. Each sinker conventionally contains a radially inwardly located, axially extending cam follower arm and a spaced apart, radially outwardly located, axially extending cam follower arm. The arms confine the cam surfaces of the cam race therebetween so that the cam surfaces control the reciprocal movements of the sinkers as the sinker ring rotates. The cam elements contain gaps between successive pairs thereof, which have gap openings on the two cam surfaces.