Cast iron casing; ball bearings of primary brands, lubricated for life (≤160), with greasers (>160); dynamic balancing of the rotor; stator winding insulation class F, copper wire enamelled in class H, double coat, vacuum resin impregnation, insulation between the phases, low losses lamination; suitability for operation with inverter; painting water-soluble, RAL 9006, unaffected by normal industrial environments and suitable for further finishing with single-compound synthetic paints; IE2 efficiency class.