Abstract: A core assembly is disclosed to form a hub for a single bearing skate wheel. The core assembly includes a unitary core member having a radially inner portion defining an axial opening extending therethrough. An annular shoulder surrounds the axial opening and defines a socket which is sized and shaped to receive a single self-contained bearing therein. The socket is positioned to align the center line of the bearing with the center line of the core member when the bearing is disposed within the socket. A bearing retainer member is also provided for removably securing the bearing within the socket. Finally, a member is disposed axially outwardly of the socket for securely locking the retainer mechanism in place within the core assembly.