ROTARY PIN

摘要

PROBLEM TO BE SOLVED: To uniformly fill grease on a surface where is brought into contact with a bearing, and keep grease for a long time. SOLUTION: A grease hole 13 extends from one end part of a rotary pin 11 to a spherical surface part 12 in an axial direction, and a pair of grease filling ports 14 communicated with the grease hole 13 are opened to an outer peripheral surface of the spherical surface part 12. A pair of vertical grooves 15 for holding and agitating grease are formed on the outer peripheral surface of the spherical surface part 12 on a position perpendicular to the pair of grease filling ports 14 around a center shaft.