LUBRICATING OIL FOR ROLLING BEARING UNIT OF HIGH-SPEED CUTTER

摘要

It is intended to provide a lubricating oil excellent in biological safety (biological harmlessness), environmental protecting properties (safety), heat resistance (tolerance to autoclave), durability and so on which is to be applied to high−speed cutters such as a high−speed rotary air turbine hand piece for dental use. A lubricating oil for rolling bearing units in high−speed cutters characterized by comprising vegetable non−dry oil extracted from rice bran (rice bran oil).