Patent ID: 7901141

Claim:
A hub unit bearing comprising: a rotating ring; a fixed ring; a plurality of rolling elements rollably disposed in an annular space between the rotating ring and the fixed ring; a sealing device configured to seal the annular space; and a magnetic encoder configured to rotate together with the rotating ring, the magnetic encoder being made of rubber or resin material by compression molding, wherein the sealing device comprises: a first slinger fixed to the rotating ring; a second slinger fixed to the fixed ring; and a rotating-side sealing portion which is fixed to a first face of the first slinger and having at least one lip which is slide-contacted with the second slinger, the rotating-side sealing portion being made of rubber material by injection molding, wherein: the magnetic encoder is fixed to a second face of the first slinger opposite the first face, the magnetic encoder and the rotating-side sealing portion are bond-fixed to the first slinger with a same adhesive agent, a radially outermost end of the magnetic encoder is separated radially inward from a radially outermost end of the first slinger, and a portion of the rotating-side sealing portion directly opposite a portion of the second face between the radially outermost end of the magnetic encoder and the radially outermost end of the first slinger has a flat face parallel to the second face and has no lip.