Bearings (bearing thrust lubrication)

A bearing for use with an assembly wherein a rotatable member can be carried on a somewhat horizontally disposed shaft to reduce lubricant losses through said bearing comprising,

• a bearing body having an arcuate bearing surface defining an axial sleeve bore portion adapted to engage a surface of said shaft with said bore having its axial centerline extending somewhat horizontally with the axis of rotation of said shaft,
• said bearing having a window opening therein through which lubricant can be introduced to said shaft,
• a radially projecting thrust face at an end of said bearing which is adapted to engage a thrust surface,
• said bearing body having a first groove formed circumferentially in the periphery of said bearing surface into which said rotatable member can extend when mounted for rotation with said shaft, said first groove being spaced axially outwardly from said window and located between said window and said thrust face,
• said bearing body also having a confined collector groove in the periphery of said bearing surface having a lowermost area below said bearing surface in which a lubricant may collect,
• said collector groove being positioned between said first groove and said thrust face and being spaced from said first groove by a wall extending transversely to the axial direction of said bearing bore so as to provide a positive reservoir area for collecting lubricant draining in an axial direction toward said thrust face,
• connecting means in said wall operatively coupling said first groove and said collector groove together in proximity to said lowermost area of said collector groove so some of said lubricant can move between said first groove and said collector groove,
• said bearing also having a recess therein which opens at the thrust face thereof and which communicates with said collector groove and extends through said wall to said first groove at a point above the lowermost point of said collector groove,
• said recess being displaced from a vertical centerline passing through said rotational axis of said shaft and above said lowermost point of said collector groove, and
• lubricant transfer means in said recess for receiving and moving lubricant from both said first groove and collector grooves toward the thrust face for use in lubricating the thrust face,
• said lubricant transfer means having a main leg in said recess and an offset leg which extends circumferentially in said collector groove toward said connecting means between said first and said collector grooves to gather lubricant therefrom and move it to said main leg for use in providing lubricant to said thrust face,
• said main leg also having a portion exposed to said recess area in said wall between said collector groove and said first groove to enable said main leg to receive lubricant from said first groove and said rotatable member during rotation of said member by said shaft,
• said main leg extending at an angle to said offset leg and terminating short of intersecting or overlaping said window opening.