Patent ID: 6138811
Filing Date: 2000-10-31
Classification: F16D

Abstract:
A spline hub comprising:a cylindrical boss having an inner peripheral surface configured for engagement with a shaft for rotation therewith, said inner peripheral surface being formed with a plurality of spline grooves and spline teeth that extend in an axial direction with respect to a rotational axis of said boss, and said inner peripheral surface being further formed with at least one lubricant groove which extends circumferentially around said inner peripheral surface intersecting with each of said spline grooves; andwherein at least one of axial side of said lubricant groove includes a tapered surface that is inclined with respect to a line extending radially outward from and perpendicular to the rotational axis of said boss, said tapered surface extending radially outward with respect to the rotational axis from an innermost surface of said spline teeth, and approaching the other axial side as said tapered surface extends radially outward.