Electric bicycle drive unit fastening assembly

An electric bicycle drive unit mounting arrangement for attaching an electric drive unit at a drive receptacle of a bicycle frame,

• wherein the bicycle frame comprises a fixed bearing fastening frame leg and a parallel loose bearing fastening frame leg,
• wherein a drive unit housing comprises a fixed bearing fastening housing flange and a parallel loose bearing housing flange,
• wherein the fixed bearing housing flange is frictionally attached directly against the fixed bearing frame leg, and
• wherein a loose bearing fastening element is provided for attaching the loose bearing housing flange to the loose bearing frame leg,
• wherein the loose bearing fastening element is configured as a loose bearing threaded bolt, which comprises a cylindrical bolt head, which is seated without radial play in a loose bearing cylinder bore of the loose bearing frame leg, and comprises a threaded portion with an external thread, which is screwed in a corresponding internal thread at the loose bearing frame leg.