BEARING DEVICE COOLING STRUCTURE, AND MAIN SPINDLE DEVICE OF MACHINE TOOL

A bearing device (B) includes: a bearing (1); an outer ring spacer (4) adjacent to an outer ring (2) of the bearing (1); and an inner ring spacer (5) adjacent to an inner ring (3) of the bearing (1), wherein the outer ring spacer (4) is provided with a nozzle (10) configured to discharge compressed...

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Bibliographische Detailangaben
Hauptverfasser:	FUKADA, Kikuo, NASU, Keisuke, OBATA, Tomohiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEATING LIGHTING LUBRICATING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A bearing device (B) includes: a bearing (1); an outer ring spacer (4) adjacent to an outer ring (2) of the bearing (1); and an inner ring spacer (5) adjacent to an inner ring (3) of the bearing (1), wherein the outer ring spacer (4) is provided with a nozzle (10) configured to discharge compressed air toward an outer peripheral surface of the inner ring spacer (5), the nozzle (10) is inclined frontward in a rotation direction, each of the outer ring spacer (4) and the inner ring spacer (5) has a width (W) equal to or larger than 2.5 times of a bearing width (X), and a distance (Y) from a center of the nozzle (10) to a side surface of the bearing (1) is equal to or smaller than the bearing width (X) and equal to or larger than half of the bearing width (X).