The coating device for coating a metal band (12) in a melt (14) of a non-magnetic metal comprises a shaft (16) rotatable in the melt (14) for guiding the metal band (12). The shaft (16) is supported in a shaft bearing (261) that is a magnetic bearing whose stationary portion (281) is encapsulated. Thus, a contactless shaft support in a metal melt is obtained, whereby the bearing wear is largely reduced and the service life of the bearing is prolonged.