| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrolytic corrosion preventive rolling bearing restricted to the minimum in a value of the current flowing inside the bearing by forming an insulating layer to cover any one of or both of the outside diameter surface of an outer ring and the inside diameter surface of an inner ring and at least one side surface of a raceway ring in place of a means for providing an electric brush or a means for sealing a special grease. SOLUTION: This electrolytic corrosion preventive rolling bearing is formed of the outer ring 2, the inner ring 1, a rolling body arranged between the outer ring and the inner ring, and the insulating layer fitted to the outside of the outer ring from one side. The insulating layer 5 is formed into a ring-like structure integrally formed of a part provided with a groove in the circumferential direction on the outside diameter side to house the outside diameter surface 2a of the outer ring of the bearing and a part for sealing in the side surface 2b of the bearing. As a material for the insulating layer, any one of a polyester group elastomer, a polyamide group elastomer, silicone rubber and fluorine rubber is selected, and dielectric ratio of the insulating layer is 2-6.2 at 1 kHz. COPYRIGHT: (C)2006,JPO&NCIPI
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