Patent ID: 8505449

Claim:
A press drive ( 3 ) for a press ( 1 ), the press ( 1 ) including a press plunger ( 2 ) supported by a press head piece ( 5 ), the press drive ( 3 ) comprising: at least one electric motor including a stator ( 11 ) and a rotor ( 12 ) which are arranged concentrically; the rotor ( 12 ) including a rotor base body ( 14 ) having oppositely disposed front faces ( 56 , 57 ), the rotor ( 12 ) including permanent magnets ( 36 ) operatively arranged at the outer circumference of the rotor base body ( 14 ); the rotor ( 12 ) including at least one directly adjacent eccentric ( 27 ), the at least one directly adjacent eccentric ( 27 ) formed as part of and projecting axially from one of the front faces ( 56 , 57 ) of the rotor base body ( 14 ), the rotor base body ( 14 ) and the at least one directly adjacent eccentric ( 27 ) forming a rotatably supported single rigid component; the rotor base body ( 14 ) including a hub ( 17 ) having a cylindrical through bore ( 55 ), the cylindrical through bore ( 55 ) operatively passing through the single rigid component of the rotor base body ( 14 ) and the at least one directly adjacent eccentric ( 27 ), a shaft ( 18 ) passing through the cylindrical through bore ( 55 ) ( 45 ) firmly mounted to the hub ( 17 ) and including a common bearing structure ( 19 , 20 ) rotatably supporting the ends of the shaft ( 18 ); at least one connecting rod ( 32 ) supported on the at least one directly adjacent eccentric ( 27 ) for driving the press plunger ( 2 ).