Abstract: A bearing assembly for an electric motor is provided that includes a bearing having an inner race and an outer race, and a bearing float sleeve having an outer race engaging member. The outer race engaging member includes an outer surface sized for slip fit engagement with a bearing seat formed in a motor end member such that the bearing float sleeve can be displaced axially in relation to the bearing seat and an inner surface configured for engagement with the bearing outer race such that the bearing outer race is in a fixed rotational position with respect to the bearing float sleeve. The bearing float sleeve includes at least one feature operational to maintain a fixed rotational position of the bearing float sleeve with respect to the motor end member.

Abstract: A permanent magnet rotor is described. The permanent magnet rotor includes at least one permanent magnet and a rotor core including a first end and a second end. The rotor core includes at least one inner wall that defines a permanent magnet opening configured to receive the at least one permanent magnet. The rotor core further includes at least one permanent magnet retention feature extending substantially radially from the at least one inner wall and configured to maintain a position of the at least one permanent magnet with respect to the at least one permanent magnet opening.

Abstract: A rotatable assembly that includes a plurality of permanent magnets and a rotor core is described. The rotor core includes a first end, a second end, and at least one inner wall that defines a permanent magnet opening configured to receive at least one permanent magnet of the plurality of permanent magnets. The rotor core further includes at least one bridge positioned between permanent magnet openings, wherein at least a first permanent magnet and a second permanent magnet of the plurality of permanent magnets generates a first rotor pole of a plurality of rotor poles.

Abstract: A permanent magnet rotor is described. The permanent magnet rotor includes at least one permanent magnet and a rotor core including a first end and a second end. The rotor core includes at least one inner wall that defines a permanent magnet opening configured to receive the at least one permanent magnet. The rotor core further includes at least one permanent magnet retention feature extending substantially radially from the at least one inner wall and configured to maintain a position of the at least one permanent magnet with respect to the at least one permanent magnet opening.

Abstract: A bearing assembly for an electric motor is provided that includes a bearing having an inner race and an outer race, and a bearing float sleeve having an outer race engaging member. The outer race engaging member includes an outer surface configured for engagement with a bearing seat formed in a motor end member and an inner surface configured for engagement with the bearing outer race such that the bearing outer race is in a fixed rotational position with respect to the bearing float sleeve. The bearing float sleeve includes at least one feature operational to maintain a fixed rotational position of the bearing float sleeve with respect to the motor end member.