Patent ID: 7757402

Claim:
An assembling method for a double-row tapered-roller bearing assembly comprising: an outer ring including a first outer raceway and a second outer raceway formed on an inner peripheral surface thereof; an inner ring including a second inner raceway in opposing relation with the second outer raceway; a hub body including a first inner raceway in opposing relation with the first outer raceway, formed with a flange projecting diametrically outwardly from one end thereof, and formed with a smaller-diameter cylindrical surface portion at the other end thereof, the smaller-diameter cylindrical surface portion allowing the inner ring to be fixedly fitted thereon; a plurality of first-row tapered rollers interposed between the first inner raceway and the first outer raceway; a first cage allowing the first-row tapered rollers to be arranged thereon at regular space intervals; and a first seal ring mounted to the outer ring at its end close to the first outer raceway, the method comprising the steps of: fabricating a sub-assemble member by combining the first cage with the first-row tapered rollers; fitting a retainer ring in the sub-assemble member at place diametrically inwardly with respect to the first-row tapered rollers, thereby pressingly supporting the tapered rollers; mounting the sub-assemble member to the first outer raceway of the outer ring; mounting the first seal ring to the outer ring with the sub-assemble member mounted thereto at an end of the inner peripheral surface formed with the first outer raceway; and combining the hub body with the outer ring having the first seal ring and the sub-assemble member mounted thereto, as pushing out the retainer ring fitted in the sub-assemble member by means of a step portion defined between the smaller-diameter cylindrical surface portion and the first inner raceway of the hub body.