Meervoudige lager met spiraalgroef voor een r÷ntgenbuis.,申请号NL20021020360-传众专利搜索

Meervoudige lager met spiraalgroef voor een r÷ntgenbuis.

申请公布号：NL1020360(A1)

申请号：NL20021020360

申请日期：2002.04.10

申请公布日期：2002.10.15

申请人：

GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY LLC

发明人：PAUL MICHAEL RATZMANN;DOUGLAS J. SNYDER

分类号：F16C17/10;F16C33/10;H01J35/10

主分类号：F16C17/10

摘要：A multiple row spiral grooved bearing assembly 26 for use in a rotating anode X ray tube device 10 has an intermediate race 32 having a spiral grooved inner 34 and outer 36 surface placed between an outer housing 28 and an inner bearing shaft 30. A layer of gallium 42, 44 is interposed between the spiral grooved inner surface 34 and the inner bearing shaft 30 and between the spiral grooved outer surface 36 and outer housing 28 to provide lubrication for the surfaces of the intermediate race 32. The intermediate race 32 reduces the relative velocity between moving parts, thereby reducing heat generation of the bearing assembly 26 for a given anode rotation speed. This enables higher target 14 velocities, and hence higher focal spot power, available to the x-ray tube device 10 as compared with traditional ball-type bearing designs.