ROLLING BEARING COMPONENT FOR SPEED REDUCER

To provide a rolling bearing component (outer ring or inner ring) that uses a cement steel-based special material and has its surface carbonitrided, resulting in nitride formed at the surface layer part, to delay breakage due to hydrogen embrittlement.SOLUTION: A rolling bearing component included i...

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Bibliographische Detailangaben
1. Verfasser:	SHIMADA HIROTAKA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS BEARINGS BLASTING CHEMISTRY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	To provide a rolling bearing component (outer ring or inner ring) that uses a cement steel-based special material and has its surface carbonitrided, resulting in nitride formed at the surface layer part, to delay breakage due to hydrogen embrittlement.SOLUTION: A rolling bearing component included in a speed reducer is made of steel comprising, in mass%, C: 0.10-0.80%, Si: 0.05-1.20%, Mn: 0.10-1.00%, Cr: 1.50-4.00%, Mo: 0.10-1.00%, with the balance being iron and unavoidable impurities, with its outermost surface layer provided with a carbonitrided layer.SELECTED DRAWING: Figure 1 【課題】浸炭鋼系の特殊素材を使用し、その表面に浸炭窒化処理を施すことで表層部に窒化物を形成し、水素脆化による破損を遅延させる転がり軸受部品（外輪または内輪）を提供する。【解決手段】減速機に内蔵される転がり軸受の部品において、質量％で、Ｃ：０．１０～０．８０％、Ｓｉ：０．０５～１．２０％、Ｍｎ：０．１０～１．００％、Ｃｒ：１．５０～４．００％、Ｍｏ：０．１０～１．００％、残部鉄および不可避不純物を含む鋼製であり、最表層には浸炭窒化層を形成する。【選択図】図１