Electrolytic erosion preventing insulated rolling bearing, manufacturing method thereof, and bearing device

摘要

Disclosed herein is an electrolytic erosion preventing insulated rolling bearing and a manufacturing method thereof. In one embodiment, the electrolytic erosion preventing insulated rolling bearing includes an insulating coating being a ceramic coating layer including alumina as the main component and 0.01 to 0.2 percent by weight titanium oxide with the alumina having a particle size ranging from 10 to 50 mum and average particle size ranging from 15 to 25 mum.