FIELD: electrical engineering.
SUBSTANCE: electric machine comprises housing accommodating stator and rotor fixed on shaft between first and second bearings. Grease used is grease lubricant. Housing comprises a closing element separating the first bearing from the main cavity and having head and tail enveloping sealing cylindrical surfaces surrounding the head and tail enveloping sealing cylindrical surfaces of the shaft to form non-contact seals. Said seals form a single sealing channel. On the head male sealing cylindrical surface there is a head screw groove with the screw direction, which is opposite to the shaft rotation direction, and on tail cylindrical sealing cylindrical surface - with direction of screw, which coincides with shaft rotation direction (if seen from second bearing side towards first bearing).
EFFECT: higher reliability of bearing assembly.
16 cl, 7 dwg
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