BEARING DEVICE FOR VEHICLE WHEEL

Provided is a vehicle wheel bearing device comprising an outer-side seal that is resistant to deterioration over time and can prevent foreign matter such as muddy water from penetrating into the interior of a bearing. This vehicle wheel bearing device comprises an outer-side seal member 7 that seals an outer-side opening end of an annular space formed by an outer wheel 2 and a hub wheel 3. The outer-side seal member 7 has a core metal 8 that is fitted to the outer wheel 2, a seal member 10 that is joined to the core metal 8, and a metal ring 9 that is fitted to the hub wheel 3 and with which the seal member 10 is in sliding contact. An annular space S is provided between the metal ring 9 and the hub wheel 3, and the annular space S is filled with a sealing material 20.