To provide a fitting device constituted of an improved bearing housing sleeve and a frame hole, for the print drum of an offset printing machine.

This device include a taper shaped bearing housing sleeve 12 which can be inserted into or drawn from a taper hole 30 formed on the supporting frame 20 of a print drum in the direction of the axis. The taper shaped bearing housing sleeve 12 is provided with an outer circumferential face 26 and a cylindrical hole 34. The taper shaped bearing housing sleeve 12 is provided with the end having an extreme end with a flange 32 for limiting movement in the axial direction of the taper shaped bearing housing sleeve 12 in the taper hole 30. This fitting device includes further a nearly annular bearing 14 arranged in the cylindrical hole 34 of the taper shaped bearing housing sleeve 12.