The invention relates to a four-system single-cylinder circular knitting machine, on which the fabric is produced in a plain or tuck weave in the circular motion of the needle cylinder. The cam system is adapted for the actuation of the needles and pushers. The invention solves the design of the cam system and the mounting of the pusher feet for high knitting speeds by arranging tuck-cam parts in the first knitting systems in the path of the needles and in the other knitting systems in the path of the pushers.
