Folded fluid channel for a fluid dynamic bearing motor

An apparatus includes a stationary shaft and a sleeve rotatable with respect to the shaft. A fluid dynamic bearing is defined by the stationary shaft and the sleeve. A fluid channel includes a first axially extending portion in the fluid dynamic bearing, and a radially extending portion extending ra...

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Bibliographische Detailangaben
Hauptverfasser:	LE LYNN B, GRANTZ ALAN LYNDON
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:	An apparatus includes a stationary shaft and a sleeve rotatable with respect to the shaft. A fluid dynamic bearing is defined by the stationary shaft and the sleeve. A fluid channel includes a first axially extending portion in the fluid dynamic bearing, and a radially extending portion extending radially outward from the first axially extending portion. In addition the fluid channel includes a second axially extending portion extending axially downward from the radially extending portion. The apparatus further includes a pump seal including grooves formed in the second axially extending portion.