COOLING STRUCTURE FOR BEARING DEVICE

摘要

A bearing device includes an outer ring spacer (4) and an inner ring spacer (5), which are interposed between outer rings of a plurality of axially juxtaposed rolling bearings and inner rings (3) of such rolling bearings, respectively. The outer ring and the outer ring spacer (4) are disposed within a housing (6) while the inner ring (3) and the inner ring spacer (5) are mounted on a main shaft (7). A nozzle (12) is provided in the outer ring spacer (4) for blowing a cooling fluid to an outer peripheral surface of an inner ring (3) or the inner ring spacer (4) to thereby supply the cooling fluid to the rolling bearing. The nozzle (12) is provided with its discharge port side inclined forwardly with respect to the direction of rotation of the main shaft (7).