| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing having a bearing internal structure which can supply lubricating oil into a bearing, and can deliver it promptly without stagnating the lubricating oil in the bearing during high-speed rotation. SOLUTION: This roller bearing relates to a cylindrical roller bearing having an inner ring with collar and an outer ring without collar. A retainer 3 is guided to the raceway surface of the outer ring 2. Four corners of respective pockets 5 of the retainer 3 are cut to form notches 9 passing through in the radial direction. A gap into which lubricating oil can be fed is formed between one rib 8 of a pair of ribs 7, 8 comprising the pockets 5 and the outer ring 2. It is thus possible to surely conduct the lubricating oil inside the bearing from the gap between the outer diameter surface of a collar of the inner ring 1 and the inner diameter surface of the retainer 3. The lubricating oil fed into the side of the inner ring 1 is promptly moved to the side of the outer ring in response to the rotational speed of the bearing through the notches 9 and delivered to the outside of the bearing from between the outer ring 2 and the other rib 8.
|
