To provide a DC brushless motor which is of simple structure, and from which lubricant never leaks.

A DC brushless motor, where rotors 5, 9, and 16 are fixed to the shaft 4 born by a bearing housing 2 and a turn table (6, 8) is attached to the output end of that shaft 4, is equipped with an oil leakage preventive structure consisting of plural coaxial grooves in the vicinity of the center of the non-medium placement face of the turn table (6, 8) or in the vicinity of the center of the inner side face of the rotor case.