WHEEL BEARING DEVICE

A wheel bearing device for which the work of grinding a wheel hub is simplified. The wheel hub () has an inside track groove (), a seal land part (), a recess (), and a flange surface (). An outer-side sealing member () is provided with a core metal () and a sealing member (). The sealing member includes a contact lip () and a labyrinth lip () facing the recess across a gap. The recess has a bottom () located between an outer diameter-side edge () and an inner diameter-side edge (), and a tapered surface () that extends in the radial direction from the outer diameter-side edge toward the bottom and tilts toward one end of the axial direction going from the outer diameter-side edge toward the bottom.