| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing capable of discharging a lubricant smoothly and suppressing abnormal temperature rise or pulsation of temperature, and to provide a spindle device using the same. <P>SOLUTION: The cylindrical roller bearing 1 includes an outer ring 2 on the inner circumferential surface of which an outer ring raceway surface 2a is formed, an inner ring 3 on the outer circumferential surface of which an inner ring raceway surface 3a is formed, a plurality of cylindrical rollers 4 arranged rotatably between the outer ring raceway surface 2a and the inner ring raceway surface 3a, and a retainer 5 which has a pair of annular rim parts 5a and a plurality of pillar parts 5b connecting the pair of rim parts 5a in the axial direction and which forms a plurality of pockets 5c retaining each of the plurality of cylindrical rollers 4 rotatably. The retainer 5 has guide parts 6 which project on the outer or inner circumferential surface of the rim parts 5a in the radial direction, on the outer circumferential surface of the pillar parts 5b at at least three portions and is guided to a bearing ring by the guide parts 6. <P>COPYRIGHT: (C)2012,JPO&INPIT |
