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Rotor shafts in stationary electric motors are usually solid shafts with a smaller diameter. Alone, these rotor shafts are not heavy, however the small diameter of the shaft requires that a large rotor plate package be used – making the overall rotor very heavy. For stationary motors, this is not a problem. However, in motors for electric vehicles, every little bit of extra weight reduces the vehicle’s range.
With this production line, EMAG demonstrates how weight-optimized rotor shafts – and weight-optimized electric motors in general – can be mass produced for state-of-the-art e-mobility concepts.