Abstract: A rolling bearing device, of the type including a central shaft and a hub (10) mobile in rotation relative to each other, the bearing including at least two rolling bearings (12, 13), one designated “lower” and the other designated “upper”, arranged between the central shaft (11) and the hub (10) in two positions spaced in the axial direction Z, these rolling bearings being fitted with inner (14, 16) and outer (15, 17) rings and with balls (18, 19), the rolling bearings being assembled back-to-back or face-to-face, a rigid preload being applied to these bearings along the axial direction Z, internal (22) and external (23) spacers being arranged between these rolling bearings, the inner (22) and outer (23) spacers have lengths adjusted to limit variations in rigid preload caused by temperature gradients from one point of the bearing to another to less than 30%, particularly thermal gradients in the radial direction.