This line is used to assemble knuckles for cars including: swivel bearing, angular ball bearing, retaining ring, dust cover, hub, ball joint and collar nut. In Station I the angular ball bearing is pressed in by means of a NC assembly press at controlled pressure and distance. In Station II the input shaft is joined. In Station III the input shaft is inserted into the hub by means of a NC assembly press. Collar nut peening is made in Station IV.