OIL-IMPREGNATED SINTERED BEARING, OIL-IMPREGNATED SINTERED BEARING EQUIPMENT, AND ROTATING EQUIPMENT

摘要

One embodiment relates to an oil-impregnated sintered bearing which is used at a rotation speed of 8,000 min-1 or higher, and contains a sintered body having an iron-based or copper-based base and a lubricating oil, wherein the lubricating oil: includes a synthetic oil and has a kinematic viscosity at 40 ˚C of 50-200 mm2/s; or includes a mineral oil and has a kinematic viscosity of 90-200 mm2/s.