OIL-IMPREGNATED SINTERED BEARING

摘要

PURPOSE: To provide a durable oil-impregnated sintered bearing to reduce frictional resistance of the oil-impregnated sintered bearing and continue its low friction coefficient for a long period and improve quality of a spindle motor. CONSTITUTION: Poly-α-olefin forms base oil and an oil-impregnated sintered bearing is provided to impregnate a lubrication oil composition containing aliphatic monatomic alcohol being 1-12 mass% of the whole of the composition.