Patent ID: 11913494
Assignee: AKTIEBOLAGET SKF
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. A hub bearing assembly for supporting a shaft angularly displaceable about a vertical axis and connected with a tool, the hub bearing assembly comprising:
a housing having upper and lower ends, a bore extending vertically between the upper and lower ends, the vertical axis extending longitudinally through the bore;
a bearing outer ring disposed within the bore and coupled with the housing;
a bearing inner ring disposed within the bearing outer ring and having a central bore configured to receive a portion of the shaft;
at least one set of a plurality of rolling elements disposed between the bearing outer ring and the bearing inner ring and spaced circumferentially about the vertical axis;
an upper seal disposed within the bore externally of the bearing outer ring so as to be spaced axially above the rolling elements and adjacent to the housing upper end, the upper seal including an annular elastomeric seal body with a sealing lip;
a lower seal disposed between the bearing inner ring and the bearing outer ring so as to be spaced axially below the rolling elements; and
an annular spacer disposed within the upper seal and adjacent to the upper axial end of the bearing inner ring;
wherein the housing has an annular shoulder adjacent to the housing upper end, the shoulder extending radially into the bore and having an inner circumferential surface, and the upper seal is disposed within the annular shoulder and engaged with the inner circumferential surface of the annular shoulder to couple the upper seal with the housing.