Sensor-equipped rolling bearing apparatus

A sensor-equipped rolling bearing apparatus comprising:

• a magnetic member mounted such that a magnetic field can alternately change in a circumferential direction of a rotating ring;
• and
• a sensor fixed to a stationary ring so as to detect the magnetic field of said magnetic member to thereby measure a rotational speed of said rotating ring,
• wherein said bearing apparatus includes an annular member through which, said sensor is fixed to said stationary ring,
• wherein said annular member includes a fixing portion to which said sensor is fixed, and a cover portion fitted on said stationary ring,
• wherein said fixing portion and said cover portion are separately formed and connected together,
• wherein said cover portion covers said magnetic member over an entire periphery thereof such that said magnetic member is not exposed to the exterior in an axial direction,
• wherein the annular member includes a cylindrical portion and an extension portion extending radially from an axially-outer end of the cylindrical portion toward the rotating ring,
• wherein the extension portion includes an abutment surface abutting against an end face of the stationary ring in a state that the cylindrical portion of the annular member is fitted to the stationary ring, and
• wherein a drain hole for discharging water is formed in the extension portion such that the abutment surface corresponding to the drain hole is removed.