Electric motor for a compressor with a rotor with combined balance weights and oil separation disk

A rotor of an electric motor for a compressor having a compressing element and an electric motor for driving said compressing element which are accommodated in a closed container, said rotor comprising:

• a rotor core comprising a plurality of laminations of a material having magnetic properties;
• a first end surface member of a nonmagnetic material disposed at one end of said rotor core and having a disk portion for oil separation and a balance weight portion;
• a second end surface member of a nonmagnetic material disposed at the other end of said rotor core;
• and
• a plurality of fastener members which extend through said first end surface member, said rotor core, and said second end surface member to integrally fasten said rotor core, said first end surface member and said second end surface member.