Convex counter weight groove electric motor rotor end plate

The utility model provides a convex counter weight groove electric motor rotor end plate, including the end plate body, it has a plurality of oilholes, its characterized in that to open on the circumferencial direction on the end plate body along the center of end plate body: fit with a contraceptive ring its circumferencial direction and open and have a plurality of balance weight hole in the inboard of oilhole, squint 60 each other between balance weight hole, the distance between every balance weight hole starting point is end plate body shaft hole radius. The utility model discloses an at counter weight inslot installation balancing weight, the both ends face and the end plate body that are the balancing weight be to the tie, has avoided balancing weight overhang edition of books body terminal surface in that the operation causes the influence to the motor, sets up a plurality of oilholes in the one side that is close to its shaft hole and make be convenient for the in the course of the work even lubricat