Mining tricone bit based on roller composite bearing

The invention relates to a mining tricone bit based on a sliding and rolling composite bearing. The mining tricone bit adopts the technical scheme that a roller bearing journal and a boss between the roller bearing journal and a roller bearing journal 5 are both designated cylinders having the diame...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	QIU LINGHUI, QIU CONGMING, CONG SHANHAI
Format:	Patent
Sprache:	chi ; 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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