| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable cylindrical roller bearing easy to manufacture and assemble, and capable of surely preventing a slip of rolling elements.SOLUTION: A cylindrical roller bearing 20 includes: an outer ring 21 formed with an outer ring raceway 21a in an inner peripheral part thereof; an inner ring 22 formed with an inner ring raceway 22a in an outer peripheral part thereof; and a plurality of cylindrical rollers 23 respectively formed with a rolling part 23a in an outer peripheral part thereof, an end of the cylindrical roller 23 is formed with a small gear 23b having a PCD equal to the diameter Dr2 of the rolling part 23a. An internal gear 21b to be engaged with the small gear 23b is integrally formed with an inside diameter end part of the outer ring 21, and a large gear 22b to be engaged with the small gear 23b is integrally formed with an outside diameter end part of the inner ring 22. The tip diameter D23b of the small gear 23b is formed equal to or smaller than the diameter Dr2 of the rolling part, and the tip diameter of the internal gear 21b is formed smaller than the diameter of the outer ring raceway, and the tip diameter of the large gear 22b is formed larger than the diameter of the inner ring raceway. |
