To sufficiently endure even use of applying a load such as heavy machinery, with a sufficient withstand load, by surely fixing mutual divided bodies.

This divided sprocket 1 is provided for fastening and fixing a pair of sprocket half bodies 2 and 3 having joining surface parts 21 and 31 and shaft hole parts 22 and 32 to a shaft 10. The sprocket half bodies 2 and 3 are composed of semicircular sprocket members 51 and 52 forming a tooth on the outer periphery and semicylindrical parts 61, 62, 71 and 72 respectively, integrally and continuously arranged on both sides in its axial direction. The pair of sprocket half bodies 2 and 3 mutually superposed by joining the joining surface parts 21 and 31 and the shaft hole parts 22 and 32, are integrally fixed by a fixture 8 in the mutually superposed semicylindrical parts 61, 62, 71 and 72.