Patent ID: 8439569

Claim:
A rotary machine comprising: a lubricating oil chamber; a combined bearing including: a first roller bearing having an inner ring and an outer ring; a second roller bearing in contact with said first roller bearing and arranged on the same axis as said first roller bearing, said second roller bearing having an inner ring and an outer ring; and a lubricating oil inlet for introducing a lubricating oil into an inner space between said first roller bearing and said second roller bearing, said lubricating oil inlet being located on at least one of said outer ring of said first roller bearing and said outer ring of said second roller bearing; a bearing case having an introduction passage communicating with said lubricating oil inlet; a bearing cover having an upper surface configured to receive lubricating oil dripping from a ceiling of said lubricating oil chamber, and to introduce the received lubricating oil to said lubricating oil inlet via said introduction passage; and a rotational shaft supported by said combined bearing.