Patent ID: 7614818

Claim:
An assembly, comprising: a shaft with an external splining of a limited length located at an end of the shaft; a hub with an internal splining extending essentially the length of the hub, the external splining and internal splining engaging each other to permit a transmission of torque between the shaft and hub; a first axial securing mechanism between the shaft and hub preventing the hub from axially sliding further onto the shaft, the first axial securing mechanism comprising a stop surface on the hub and a counterpart surface on the shaft; and a second axial securing mechanism between the shaft and hub, preventing the hub from being pulled off from the shaft, the second axial securing mechanism comprising a securing ring in the form of a round snap ring situated at the end of the shaft and an end of the hub oriented toward the shaft end and that engages in a radial recess in the shaft and a radial recess in the hub, both recesses forming contact surfaces for the securing ring on the shaft and hub, wherein the radial recess in the shaft comprises a first annular groove with an annular groove diameter (d 1 ) adjoining, in the direction toward the shaft end, and an annular groove step with an annular groove step diameter (d 2 ), wherein the annular groove step (d 2 ) is greater than the annular groove diameter (d 1 ), the radial recess in the shaft forming a first stop surface for the securing ring, wherein the radial recess in the hub comprises a second annular groove formed in the end of the hub oriented toward the shaft end; and wherein the first annular groove has a first flank substantially perpendicular to the shaft axis and closer to the main body of the shaft, and a second flank substantially perpendicular to the shaft axis and closer to the end of the shaft, and the annular groove step has a third flank substantially perpendicular to the shaft axis and closer to the end of the shaft than the second flank.