ROTARY SHAFT MECHANISM AND PUMP

摘要

PROBLEM TO BE SOLVED: To inhibit wear at a rotary shaft side and a bearing side from being caused by foreign objects taken into a gap between a rotary shaft and a bearing.SOLUTION: A rotary shaft mechanism includes a passage 1 which is provided extending on a circumference of a rotary shaft 14, which slidably contacts with an inner peripheral surface side of a cylindrical bearing 16, and opening on an outer peripheral surface of the rotary shaft 14 at one end 1a and the other end 1b.SELECTED DRAWING: Figure 10