Bearing for a shedding machine or motion transmission system, heald motion lever comprising such a bearing and shedding machine comprising a lever or such a bearing

摘要

A bearing 25 for a system for transferring motion to the frames of a shed forming machine or loom, the bearing comprising an inner ring 72, an outer ring 74 and rolling elements 76. . The inner ring is centered on the main axis A72, includes two sides perpendicular to the main axis, and forms a peripheral ring 80 centered on the main axis. The outer ring 74 forms a circular inner ring 82 centered on the main axis. The rolling elements 76 are interposed between the peripheral ring and the inner ring, radially about the main axis, to guide the outer ring to rotate about the main axis with respect to the inner ring. The inner ring 72 includes at least one slot 90 open on two sides, at least one slot extending opposite a portion of the peripheral ring 80, and a material bridge between the slot and the peripheral ring. (material bridge) 94 is formed. The material bridge 94 extends over an angular sector 99 of the inner ring, each sector being centered on the main axis A72 of the bearing and occupied by two rolling elements 76. Greater than or equal to the vertex angle β2 of each sector, preferably occupied by 5 rolling elements, preferably greater than or equal to the vertex angle β5 of each sector, preferably occupied by 9 rolling elements Has a vertex angle α1 greater than or equal to the vertex angle β9 of each sector, more preferably greater than or equal to the vertex angle β13 of each sector occupied by 13 rolling elements. . The inner ring 72 further includes at least one hole 88 for fixing the bearing 25.