Aktiebolaget Skf

Gabriele Bonifetto

Laura Sguotti

Luca Tedeschini

Flavio Franza

Gerardo Rainone

Roberto Pairetti

Paolo Lagori

Renzo Reiso

A wheel hub unit having a rotatable hub provided with an axially outer flange and a bearing unit. The bearing unit providing a radially outer ring, a radially inner ring and a plurality of rolling bodies positioned respectively between the radially outer ring and the hub and between the radially outer ring and the radially inner ring. The radially inner ring has a finished axial length which ensures a predetermined value of an axial preload of the bearing unit and a finished axial length is defined by the following formula: X'=(X+&#x394;X)&#x2212;&#x394;X1

Flanged wheel hub unit and assembly method

A hub-bearing unit is provided with a hub, rotatable, with an axially outer flange portion configured for engagement with a rotatable element of a motor vehicle, a bearing unit provided with a fixed radially outer ring, configured for engagement with a fixed element of the motor vehicle, a first, axially outer, crown of rolling bodies, and a second, axially inner, crown of rolling bodies, interposed between the radially outer ring and the hub. The radially outer ring is held in position with respect to the knuckle by a stop ring, positioned on the axially inner side of the radially outer ring in a seat formed on the radially outer ring.

Hub-bearing unit configured for mounting on the knuckle of a suspension

A procedure for mounting a hub bearing assembly including a rotatable hub, and a bearing unit having a stationary radially outer ring, and two rolling bodies disposed between the radially outer ring and the hub, and executing the steps of hammering a first seal on the hub, mounting a cage on the seal seat, providing the outer ring assembly in axially offset manner relative to the hub, mounting the rolling bodies axially externally from the axially inner side, combining the hub to the outer ring, positioning the outer ring inclination at a predetermined angle, mounting the rolling bodies from the axially inner side, aligning the hub to the radially outer ring, snap insertion of the cage, on rolling bodies from the axially outer side and the cage, on rolling bodies from the axially inner side, hammering a second seal on its seat, from the axially inner side.

Assembly procedure of a bearing unit&#x2014;hub flange

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Vigone, Italy

Gabriele Bonifetto