Hub has axle concentric with housing, bearings, rotor with cog wheel, free wheel with toothed discs, and pre-tensioning device

摘要

The hub has an axle (4) concentric with a housing (1). At least one bearing unit contains at least two bearings between the hub axle and housing... A rotor which has at least one cog wheel is pivot mounted on the hub axle. A free wheel device between the rotor and the hub housing has two toothed discs (7) concentric with the hub axle and whose tooth surfaces are pressed against each other by a pre-tensioning device The toothed discs are floating-mounted.