BEARING MATERIALS FOR TRICONE BIT ROLLING ELEMENTS

BEARING MATERIALS FOR TRICONE BIT ROLLING ELEMENTS

Roller cone drill bits (100) and methods of increasing the wear resistance of a roller cone drill bit are disclosed. The roller cone drill bit (100) includes a plurality of rolling elements (400A, 400B) within a bearing assembly (202, 204, 206) of a cone (110). Each rolling element of the plurality...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DAHIWAL, Chetan V, SURESH, Swetha, YANIAK, Thomas J, JOHNSTON, Scott A, BARGFREDE, Benjamin J, BLINDT, Todd M, APPAVU, Akilan, NUSZ, Timothy F, YERBY, Gary C, PERSHING, Michael A
Format: Patent
Sprache:eng
Schlagworte:
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
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Beschreibung
Zusammenfassung:Roller cone drill bits (100) and methods of increasing the wear resistance of a roller cone drill bit are disclosed. The roller cone drill bit (100) includes a plurality of rolling elements (400A, 400B) within a bearing assembly (202, 204, 206) of a cone (110). Each rolling element of the plurality of rolling elements (400A, 400B) may have a surface hardness of HRC 59-63, a hardened depth that is 0.5 mm to 3.0 mm deep, and may be derived from a low carbon bearing steel material. The hardened depth is measured from the surface of each rolling element (400A, 400B) and the low carbon bearing steel material has, by weight percent, from 0.12% to 0.25% carbon.