AC Induction Motor- SME AC motors are four or six pole induction motors with squirrel cage rotor and three phase winding on the stator.
Thanks to their robust construction, thanks to the total absence of brushes and commutators and
to the SME speed sensor, SME motors represent the best solution on forklifts and other electric
vehicles.
In the AC motors, the high electromagnetic field and the high working temperature cause
a lot of problems to sensor bearing and, as a consequence, a very poor reliability. A lot of AC
lift truck users agree that it was easier to replace brushes in DC motor (programmed maintenance)
than change speed sensor every 1-2 years (random maintenance).
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