Patent ID: 9109630
Filing Date: 2015-08-18
Classification: F16C

Abstract:
1. A rolling bearing unit comprising: a rolling bearing having an inner ring arranged on a rotary shaft, an outer ring arranged on an inner peripheral face of a housing, a plurality of rolling elements rollably arranged in an annular space between the inner ring and the outer ring, and a cage that holds the rolling elements; and a cage guide member that is formed integrally with the outer ring or formed as a member different from the outer ring, that is fixed to the housing, and that has a guide face that is in contact with an inner peripheral face of the cage to guide the cage while supplying grease, wherein the cage guide member has a guide projection projecting into the annular space and having an outer peripheral face, a part of which serves as the guide face, and a grease supply portion having a grease reservoir portion in which the grease is reserved, and a supply port through which the grease is supplied from the grease reservoir portion to the guide face and which is formed on the outer peripheral face of the guide projection, at a position closer to a base end portion of the guide projection than a free end of the guide face.