DOUBLE ROW ROLLER BEARING AND LUBRICATING STRUCTURE FOR DOUBLE ROW ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To prevent foreign matter from entering from outside by improving a lubrication action for a double row roller 14 group in a double row roller bearing 2 having a single outer ring 11, two inner rings 12 and 13 and a plurality of rollers 14. SOLUTION: Lubricating holes 21 and 22 are provided in the inner rings 12 and 13 respectively. An oil drainage hole composed of a pair of grooves 23 and 24 is provided in a butt part of the inner rings 12 and 13. This enables the feeding of lubricating oil from dual lubricating pathways for two row roller 14 groups individually so that the lubricating oil does not run short of feeding for the single row roller 14 group such as a conventional example where lubricating oil is fed into the two row roller 14 groups by separating it from the single circuit lubricating path. COPYRIGHT: (C)2004,JPO&NCIPI