Bearing insert for a bearing arrangement

A bearing arrangement for pivotally supporting a push arm assembly with respect to a trunnion ball of a machine, the bearing arrangement comprising:

• an adapter including an inner surface, the adapter being configured to be coupled to a bearing cap such that the coupled adapter and bearing cap substantially surround the trunnion ball;
• and
• a bearing insert including a bearing surface, an outer surface opposite the bearing surface, and a pair of flanges, the outer surface disposed between the flanges, a first flange and a second flange of the pair of flanges being configured to extend along a first side and a second side of the adapter, respectively, the first and second sides forming outermost sides of the adapter, wherein
• the bearing insert being configured to be received by the adapter such that the bearing surface is in confronting engagement with the trunnion ball, the outer surface is in confronting engagement with the inner surface of the adapter,
• the inner surface of the adapter is positioned between the flanges and the bearing insert has a thickness from a first axial end to a second axial end greater than a thickness of the adapter from the first side to the second side thereof such that the first flange extends from the first side of the adapter and the second flange extends from the second side of the adapter when the bearing insert is received by the adapter;
• and
• wherein the bearing insert is asymmetrical in a rear view showing the bearing surface, the bearing insert including a lip at a first interface between the first axial end and the bearing surface, and a curved surface at a second interface between the second axial end and the bearing surface, the lip having a first radius of curvature and the curved surface having a second radius of curvature greater than the first radius of curvature, and the lip extending radially inward more than the curved surface.

An earth-moving machine, comprising:

• a track roller frame;
• a support plate coupled to the track roller frame;
• a trunnion ball coupled to the support plate;
• a bearing insert including a bearing surface, an outer surface opposite the bearing surface, and a pair of flanges, the outer surface disposed between the flanges, the bearing surface in confronting engagement with the trunnion ball;
• an adapter including an inner surface, the adapter receiving the bearing insert such that the inner surface is in confronting engagement with the outer surface of the bearing insert and the inner surface is positioned between the flanges;
• and
• a bearing cap including a cap surface, the bearing cap releasably coupled to the adapter such that the bearing cap and the adapter substantially surround the trunnion ball and the cap surface is in confronting engagement with the trunnion ball, wherein
• a first flange and a second flange of the pair of flanges are configured to extend along a first side and a second side of the adapter, respectively, the first and second sides forming outermost sides of the adapter,
• the bearing insert has a thickness from a first axial end to a second axial end greater than a thickness of the adapter from the first side to the second side thereof such that the first flange extends from the first side of the adapter and the second flange extends from the second side of the adapter when the bearing insert is received by the adapter;
• and
• wherein the bearing insert is asymmetrical in a rear view showing the bearing surface, the bearing insert including a lip at a first interface between the first axial end and the bearing surface, and a curved surface at a second interface between the second axial end and the bearing surface, the lip having a first radius of curvature and the curved surface having a second radius of curvature greater than the first radius of curvature, and the lip extending radially inward more than the curved surface.