Patent ID: 6946765

Claim:
A rotor assembly for a brushless d.c. motor, comprising: a rotor shaft having at least one permanent magnet mounted thereon; a sleeve accommodating said rotor shaft with said permanent magnet therewithin for a free rotation of said rotor shaft, said sleeve being open at both ends; a first bearing supporting said shaft; a second bearing supporting said shaft; and a flange, said flange further comprising a bearing mounting member extending towards the interior of said rotor assembly and connecting said flange to said sleeve at a first end face of said sleeve by sliding said first end of said sleeve over said bearing mounting member, wherein said first bearing is integrated into said bearing mounting member at said first end face of said sleeve such that said first bearing is not placed into contact with said sleeve, wherein said second bearing is integrated into said sleeve at a second end face of said sleeve such that said second bearing is placed into an immediate contact with said sleeve, and wherein said first and second end faces of said sleeve are enclosed by said flange and said first and second bearings.