Insulated bearing and method of manufacturing the same

Abstract

An insulating bearing includes an outer ring, an inner ring, and rolling elements arranged between the outer and inner rings. One of the outer and/or inner ring is an insulated ring having a body and an insulating layer overmolded on the body. The insulating layer has a dielectric constant lower than 5 @ 1 MHz, more preferably lower than 4 @ 1 MHz, more preferably lower than 3.5 @ 1 MHz. The present disclosure also provides a method for manufacturing an insulating bearing. The method includes overmolding the insulating layer so that the weld seam of the insulating layer after overmolding avoids the main force-loading area of the insulated ring and/or is formed where the thickness of the insulating layer is the maximum. By overmolding, the insulating layer provides sufficient insulation even when there is high voltage and high frequency current, thereby preventing electrical corrosion of the bearing.

Dependencies are inferred from the claim text.