Tire support rim for track roller associated with a flange

A tire support rim for an annular track roller having at least one outer ring of which a prolonged part in the form of a disk on the periphery of the outer ring produces a flange of which the end of the peripheral edge is configured to cooperate with a guiding rail, the rim comprising:

• a substantially circular annular arrangement defining:
• a peripheral edge intended to bear a tire, a medial edge intended to be in contact with a medial outer surface of the outer ring of the roller, and two opposite faces forming on one side an open face and, on another side, a bearing face configured to be positioned against the surface of the flange of the track roller, wherein the support rim incorporates a cooling device comprising at least one circulation duct for air passing through the thickness of the rim such that the duct comprises at least one orifice positioned on the open face of the rim (1) and a circuit arranged such that, on the one hand, at least a first portion is positioned at the medial edge of the device and, on the other hand, at least a second portion is positioned radially on the bearing face from the medial edge toward the peripheral edge of the rim.