Roller bearing for use in spindle unit of machine tool, has rolling bodies arranged between outer and inner rings, and cage made of plastic foam, where pores of plastic foam are provided with heat conducting additive

摘要

The bearing has rolling bodies (3) arranged between outer and inner rings (1, 2) and held in a cage (4). The cage captures entire gap between the outer ring, the inner ring and the rolling bodies, and is made of plastic foam, where pores of the plastic foam are provided with heat conducting additive (5). The heat conducting additive is designed as metallic powder or graphite, and the rolling bodies are designed as balls or cylinders.