Bearing assembly equipped with a rolling bearing and scissors gear, in particular for a balancing shaft

A bearing assembly comprising:

• a rotating shaft;
• a rolling bearing having an inner ring mounted on the rotating shaft, an outer massive ring, and at least one row of rolling elements radially housed between the inner ring and outer ring;
• a scissors gear having a main gear press fitted onto an outer cylindrical surface of the outer massive ring, an auxiliary gear mounted with loose fit onto the outer cylindrical surface, and a scissors spring arranged between the main gear and auxiliary gear;
• and
• an axial retaining arrangement provided between the outer ring of rolling bearing and scissors gear, the auxiliary gear being axially blocked between the axial retaining arrangement and main gear,
• wherein the axial retaining arrangement consists in the combination of:
• an annular radial groove disposed at one axial end of the outer cylindrical surface and axially opposite to the main gear, and circumferentially radially open to the outer cylindrical surface, and
• an annular lock washer comprising a radial outer portion and a substantially conical inner portion with a plurality of tongues inwardly extending from the radial outer portion, the substantially conical inner portion being mounted in the annular groove, the radial outer portion radially extending beyond the groove so as to form an axial stop for the auxiliary gear.