TAPERED ROLLER BEARING

• Main Authors: NOMURA TAKESHI, AMANO YASUSHI, SHOJI TAKUMI
• Format: Patent
• Language: English; Japanese
• Published: 25.05.2023
• 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 provide a tapered roller bearing that can restrain the occurrence of seizure even under a severe use environment.SOLUTION: A tapered roller bearing 1 comprises inner rings 2, outer rings 4 and 5, and a plurality of tapered rollers 7 arranged between the inner rings 2 and the outer rings 4 and 5. The inside diameter of the inner rings 2 is 200 mm or less. The tapered roller bearing 1 is used under a load that is 0.2 or more times as high as a basic dynamic load rating. The inner rings 2 comprise large flange surfaces 23a and 23b with which large diameter end surfaces 71a of the plurality of tapered rollers 7 are in contact. A plurality of concave parts are formed in at least one of the large flange surfaces 23a and 23b, and contact regions in the large diameter end surfaces 71a with the large flange surfaces 23a and 23b.SELECTED DRAWING: Figure 3 【課題】厳しい使用環境下でも焼付きの発生を抑制することができる円錐ころ軸受を提供する。【解決手段】円錐ころ軸受１は、内輪２と、外輪４，５と、内輪２と外輪４，５との間に配置された複数の円錐ころ７と、を備える。内輪２の内径は、２００ｍｍ以下である。円錐ころ軸受１は、基本動定格荷重の０．２倍以上の荷重を受けた状態で使用される。内輪２は、複数の円錐ころ７の大径端面７１ａが接触する大鍔面２３ａ，２３ｂを有する。大鍔面２３ａ，２３ｂ、及び大径端面７１ａにおける大鍔面２３ａ，２３ｂとの接触領域の少なくとも一方には、複数の凹部が形成されている。【選択図】図３