Bearing device with integrated electrical insulation, in particular for electric motor or electric machine

A bearing device comprising:

• a first ring and a second ring configured to rotate relative to one another, and
• an insulating sleeve comprising a bushing and an electrically insulating lining,
• wherein the electrically insulating lining is overmolded on the bushing and on the second ring and connects the bushing to the second ring,
• wherein the bushing includes a radially external surface and a radially internal surface and a radial thickness from the external surface to the internal surface,
• wherein the radial external surface of the bushing or the radial internal surface of the bushing incudes at least one helicoidal groove,
• wherein the electrically insulating lining incudes at least one fastening rib having a shape complementary to a shape of the at least one helicoidal groove and extending into the at least one helicoidal groove, and
• wherein the at least one helicoidal groove extends circumferentially at least 360 degrees around the radial external surface of the bushing or the radial internal surface of the bushing.