| 摘要 |
PROBLEM TO BE SOLVED: To discharge a foreign matter invaded into the inside of bearing without overhauling a bearing and to facilitate a supplying of a lubricant by radially forming a plurality of grooves on both surfaces of a spacer ring disposed between a plurality of bearing units. SOLUTION: A spacer ring 3 is interposed between a plurality of bearing units 1a, 1b disposed in parallel and a plurality of V shape grooves 3a, 3b are radially on both surfaces of the spacer ring 3 at equal intervals. In the case where a foreign matter such as sediment invaded into the bearing units 1a, 1b is removed, a lubricant is poured from a lubricant-supplying nipple 8 with a pressure. The lubricant passes through a lubricant-feeding passage 6a and is released from a plurality of lubricant outlets 6b into the bearing units 1a, 1b through V shape grooves 3a, 3b of the spacer ring 3. The high pressure lubricant released is discharged from a gap formed by an elastic deformation of O rings 10a, 10b through the bearing units 1a, 1b with the lubricant including the foreign matter and the foreign matter is backwashly removed.
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