Directly-lubricated spindle bearing e.g. single-row tapered roller bearing, for machine tool, has inner and outer rings, where air flow via bearing is interrupted and lubricant portion of oil-air-lubricant mixture is reserved

摘要

The bearing has an inner bearing ring (2) fastened to a spindle (23), and an outer bearing ring (3) fastened in a spindle housing (25). An intermediate space (8) between the bearing rings is axially partitioned by circular pressure plates (10, 11), where axial air flow through the bearing is interrupted and a lubricant portion of the oil-air-lubricant mixture injected into the intermediate space between the rings is temporarily reserved. Ring surfaces (18, 19) of the pressure plates have axial boreholes, which are arranged at a distance from each other.