| 摘要 |
PROBLEM TO BE SOLVED: To prevent seizure between a rolling element and an inner ring by increasing the cooling efficiency of the inner ring to reduce a temperature difference between an outer ring and the inner ring. SOLUTION: The bearing device comprises a bearing consisting of the inner ring, the outer ring, and the rolling elements, the inner ring of the bearing being mounted on a shaft directly or via a sleeve. In the inner diameter face of the inner ring, the outer diameter face or the inner diameter face of the sleeve, or the outer diameter face of the shaft, a spiral groove is provided through which cooling medium passes to cool the inner ring or the sleeve. When the shaft is rotated and the cooling medium flows from one end of the spiral groove to the other, the cooling medium receives inertia force with the rotation of the shaft and the cooling medium flows in the direction corresponding to the spiral direction of the spiral groove. COPYRIGHT: (C)2008,JPO&INPIT
|
