Crankshaft

摘要

A crankshaft is to be provided that allows its assembly process to be simplified, work hours required for the assembly process to be shortened and a manufacturing cost to be reduced. The crankshaft (11) is provided with first eccentric section (11a) and second eccentric section at respective ends while interposing a shaft section (11b) therebetween and has such a shape that a peripheral edge of the first eccentric section (11a) and/or the second eccentric section is positioned radially inside of a peripheral edge of the shaft section (11b).