Bearing unit

A bearing unit comprising:

• a radially outer ring, rotatable with respect to an axis of rotation;
• a stationary radially inner ring;
• a row of rolling bodies interposed between the radially outer ring and the radially inner ring;
• a cage for containing the rolling bodies;
• and
• two sealing devices arranged axially on opposite sides of the bearing unit and interposed between the radially inner ring and the radially outer ring, each sealing device comprising:
• an anchoring element interference fitted in a second seat of the radially outer ring;
• a first shield sealed against a support surface of the radially outer ring and disposed in a first seat of the radially outer ring, the first shield being spaced apart from the radially inner ring, the first shield being kept in the first seat by the anchoring element, the anchoring element being axially outside the first seat, the first shield comprising:
• a radially outer first flange portion disposed in the first seat of the radially outer ring;
• a radially inner second flange portion;
• an annular central portion;
• a frustoconical first connecting portion connecting the first flange portion to the central portion;
• and
• a frustoconical second connecting portion connecting the second flange portion to the central portion;
• and
• a second shield interference fitted on a radially outer surface of the radially inner ring and axially outside the first shield, the second shield comprising:
• a frustoconical, radially outer first flange portion, radially facing the anchoring element and radially and axially facing the first connecting portion of the first shield,
• an annular central portion, axially facing the central portion of the first shield,
• a radially inner second flange portion, axially facing the second flange portion of the first shield,
• a frustoconical connecting portion connecting the second flange portion to the central portion and axially facing the second connecting portion of the first shield, and
• a radially inner cylindrical portion interference fitted on the radially outer surface of the radially inner ring;
• wherein the first shield and the second shield generate a tortuous path therebetween which hinders the ingress of contaminants into the bearing unit.