The invention relates to a wheel and/or brake disk hub for receiving a one-piece or multi-piece, and notably fragmented, brake disk having friction rings which are preferably connected via links. Said hub is configured such that cams of the hub have shoulders which protrude radially outwards and on one side axially secure the brake disk positioned on the hub. The brake disk is axially stepped at its inner periphery in such a way that a step is formed which is supported on the shoulder.