DOUBLE ROW ROLLER BEARING AND CAGE USED FOR THE SAME

• Main Author: YASUDA HIROTAKA
• Format: Patent
• Language: English; Japanese
• Published: 21.11.2019
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

To improve the efficiency of work for assembling rollers in pockets.SOLUTION: A double row roller bearing includes an inner ring 2, an outer ring 1 arranged on the radial outside of the inner ring 2, a plurality of rollers 3 arranged in double rows between the inner ring 2 and the outer ring 1 in the radial direction, and a cage 5 for holding intervals in a peripheral direction between the plurality of rollers 3 in each row. The inner ring 2 or the outer ring 1 has radially protruded annular flanges 23 at both axial ends, the cage 5 has an annular body 50 arranged between the double-row rollers 3 in the axial direction, and a plurality of columns 51 extending from the annular body 50 to both axial sides and arranged at intervals in the peripheral direction on each axial side, the plurality of columns 51 on at least one axial side include first columns 51a and at least one second column 51b shorter in the axial direction than the first column 51a.SELECTED DRAWING: Figure 1 【課題】ポケットへのころの組み付け作業の能率を向上させる。【解決手段】複列ころ軸受は、内輪２と、内輪２の径方向外側に配置された外輪１と、内輪２及び外輪１の径方向の間に２列に配置された複数のころ３と、各列の複数のころ３の周方向の間隔を保持する保持器５とを備え、内輪２又は外輪１が、径方向へ突出する環状のつば２３を軸方向の両端部に有しており、保持器５が、２列のころ３の軸方向の間に配置される環状体５０と、環状体５０から軸方向両側に延び、かつ軸方向の各側において周方向に間隔をあけて配置された複数の柱５１とを有しており、少なくとも軸方向一方側の複数の柱５１が、第１の柱５１ａと、第１の柱５１ａよりも軸方向の長さが短い少なくとも１つの第２の柱５１ｂとを含む。【選択図】図１