Bicycle wheel hub, especially for racing or mountain bikes, has axle with increased thickness in freewheel side hub bearing region

摘要

The hub axle (16) has an increased thickness in the freewheel- side hub bearing region (48). The hub comprises an axle, a casing (10), two bearings (18, 20) between the axle and casing, a freewheel body (26) supporting at least one gear wheel, two freewheel bearings (28) between the axle and freewheel body and a freewheel device (36) between the casing and freewheel body.