Rock bit lubrication system

This invention relates to rotary rock drilling apparatus, particularly roller cone rock bits used with dry drilling of rock formations. Mining bits are typically air-driven, air-lubricated roller cone rock bits having open bearings, the air being driven through the bearing system between the roller...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STEINKE, STEPHEN C
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	This invention relates to rotary rock drilling apparatus, particularly roller cone rock bits used with dry drilling of rock formations. Mining bits are typically air-driven, air-lubricated roller cone rock bits having open bearings, the air being driven through the bearing system between the roller cones and their associated journals. A lubrication system is disclosed which drips a lubricant in liquid form into the air passages communicating with each of the bearings associated with, for example, the three roller cones of the rock bit. Oil is entrained, along with the compressed air, and is directed to the bearings for cooling and lubrication purposes.