H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K5/00—Casings; Enclosures; Supports
H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K19/00—Synchronous motors or generators
H02K19/02—Synchronous motors
H02K19/04—Synchronous motors for single-phase current
H02K19/06—Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors