| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing unit in which radial rigidity is improved, and cost and torque of a bearing is reduced. <P>SOLUTION: First-third single row bearings 6, 8, and 10 are arranged between a shaft body 2 and a housing 4. Each single row bearing includes an inner ring 12, an outer ring 14, and a plurality of rolling elements 16. Between the first single row bearing and the second single row bearing, a spacer 18 is interposed in such condition as abutting with the outer rings. Between the second single row bearing and the third single row bearing, a spacer 20 is interposed in such a condition as abutting the outer rings. The inner ring of the first single row bearing abuts the outward flange 2f. The inner rings of the second and third single row bearings are bonded and fixed to the shaft body. The contact angle of the first single row bearing is set larger than the contact angle of the second and third single row bearings. The first single row bearing and the second single row bearing are arranged back to back. The second single row bearing and the third single row bearings are arranged parallel to each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
