Roller cutting tool with improved sealing

A roller cutter for a drill head for raise boring said roller cutter having a shaft with a longitudinal centre line; a hub rotatably mounted on the shaft; a seal retainer located between the axial ends of the hub and the shaft at least arranged at one end of the roller cutter; the seal retainer supp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LINDBLOM, Anders, LOIKKANEN, Joona
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:	A roller cutter for a drill head for raise boring said roller cutter having a shaft with a longitudinal centre line; a hub rotatably mounted on the shaft; a seal retainer located between the axial ends of the hub and the shaft at least arranged at one end of the roller cutter; the seal retainer supporting a primary cutter seal providing sealing between the shaft and the hub in both axial and radial directions, a secondary cutter seal located between the seal retainer and the hub, and that the secondary cutter seal provides sealing in the axial direction.