Lubricant groove structure for inner surface of bearing comprises axial zigzag shaped grooves, converging lubricant drops forming on points of zigzag

摘要

The lubricant groove structure for the inner surface (12) of a bearing (11) comprises a series of axial zigzag shaped grooves (20). Converging lubricant drops form on the left-hand points (21) of the zigzag when a shaft (1) mounted in the bearing rotates counter-clockwise and on the right-hand points when it rotates clockwise.