COOLING STRUCTURE FOR BEARING DEVICE

摘要

This bearing device has an outer race seat (4) and an inner race seat (5) which are respectively arranged adjacent to an outer race (2) and an inner race (3) of a rolling bearing (1). The outer race (2) and the outer race seat (4) mate with a housing (8), and the inner race (3) and the inner race seat (5) mate with a rotary shaft (9). The outer race seat (4) is provided with a nozzle (12) for spraying a cooling fluid (R) towards the outer peripheral surface (3b) of the inner race (3), the nozzle (12) being inclined such that the discharge port (12a) side thereof faces forward in the direction of rotation of the inner race (3). The incline angle α of the nozzle (12) with respect to the axial direction is within the range of 50°-90°.