抄録
The occurrence conditions of electrical pitting in ball bearing for applying direct current have been made known. However, the report on the electrical pitting in applying alternative current is very few. In this research, experiments on electrical pitting of ball bearing in applying alternative current. In consequence, the travelling mark on the surface of raceway track was thin and the deterioration was minor. Therefore, the authors considered the concernment between the discharging energy and the deterioration very likely.
