Ball nut and method of manufacturing same.

摘要

A ball nut for use in combination with a ball screw and a plurality of ball bearings wherein said ball nut has a metallic sleeve segment (40) including a longitudinal opening (42) and a plurality of equidistant arcuate grooves (46). A polymeric deflector segment (30) is included, having a plurality of S-shaped return grooves (32) spaced apart sufficiently to cooperate with the plurality of arcuate grooves (46) of the sleeve segment for completing a plurality of bearing race circuits inside the ball nut. A polymeric ball nut body (12) encases the sleeve segment including a longitudinal slot (28) for receiving the deflector segment (14) sufficiently to place the plurality of equal distant arcuate grooves (46) into cooperation relationship with the S-shaped return grooves (32).