Different types of sliding, rolling, or rotating micromotors with rare-earth-based permanent magnet rotors are presented. The magnets move synchronously with rotating or traveling magnetic fields generated by 25-micrometer thick gold curent lines on silicon substrates. The magnets are guided in channels or openings in the silicon itself or in additional glass layers. For magnets with a typical dimension of 1 mm, forces and torques of 150 μN and 100 nNm could be achieved. Maximum velocities of 24 cm//s and a rotation frequency of 2000 rpm have been measured.