| 摘要 |
High speed bearing has an outer sleeve with an outer race and a shaft with an inner race and two rows of balls with a cage, and has a shaft (1) dia (d) increased between the first race (2) and the second race (3) by a ratio of d/D = 0.6 to 0.95, where (D) is the dia of the thickened section of the shaft (1). The gap (a) between the end face of the shaft (1) and the first race (2) is shortened by a ratio of a/I = 0.40 to 0.57, where (1) is the gap between the first (2) and second (3) race. The shaft (1) for the inner races (2,3) is pref within the sleeve (4) for the outer race. The balls (5) of the bearing are contained within a cage (7), in two rows. Disc covers (6) are at both ends. The shaft (1) dia is increased between the two races (2,3). ADVANTAGE - The structure increases the dynamic rigidity and the working life of the bearing, and allows it to function at higher speeds than 8 x 10 power 4/min. |
