ROLLER BEARING, RETAINER SEGMENT, SPACER, AND MAIN SHAFT SUPPORTING STRUCTURE OF WIND POWER GENERATOR

摘要

PROBLEM TO BE SOLVED: To provide a bearing not susceptible to breakage of retainer segments.

SOLUTION: A roller bearing comprises: an outer ring; an inner ring; a plurality of rollers disposed between the outer ring and the inner ring; a plurality of column parts extended in a direction along an axis so as to form pockets retaining the rollers; connecting parts circumferentially extended to connect the plurality of column parts; and a plurality of retainer segments sequentially and continuously disposed in a circumferential direction between the outer ring and the inner ring. In the retainer segments, an oil reservoir 23a is provided on an end face 21a as an end part in a circumferential direction abutted with adjacent retainer segment.

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