Electric motor for e.g. sawing of plate-shaped bodies, has disk-shaped rotor with asymmetrically arranged rotor disk, and permanent magnets fastened at rotor disk and at processing and sawing tools

摘要

The motor has a disk-shaped rotor with an asymmetrically arranged rotor disk (2), and permanent magnets (1) fastened at the rotor disk and at processing- and sawing tools (6). The mass of the rotor disk comprises fourty percentage of the weight of the motor. A rear wall is cooled by removing dust in the rear wall such that a channel (5) is formed in an area of the rear wall, where suction air flows along the rear wall for cooling the rear wall.