Replaceable cylinder element including cylindrical sleeve and end members having complementary centering faces

A replaceable cylinder element for a printing unit having at least one frame wall, said cylinder element comprising:

• a cylindrical sleeve including centering sections located at the ends thereof, a functional layer accommodated on said sleeve, a supporting body adapted to pass through said cylindrical sleeve, two end members, having centering faces respectively complementary to said centering sections of said cylindrical sleeve, said end members being attached on said supporting body for supporting said cylindrical sleeve in a centered relation to an axis of said cylindrical sleeve by said centering faces cooperating with said complementary centering sections of said cylindrical sleeve, at least one of said end members being detachable with respect to said supporting body, and a bearing element, on which said supporting body is mounted in a frame wall of the printing unit, accommodated on said detachable one of said end members.