ROLLER BEARING FOR ROCKING MOTION HAVING SYNCHRONOUS FOLLOW-UP MECHANISM OF CAGE FOR ROLLING ELEMENT

PURPOSE: To compensate a difference between a roller motion and a motion of a bearing cage by connecting a pinion to the bearing cage flexible and elastically in a direction of the circumference of the cage. CONSTITUTION: A shaft pin 7 for receiving a pinion 8 is disposed on an elastic web connected to a bearing cage 4. When an outer wheel element 1 is relatively moved to bearing parts 6, a roller body 2 is rolled on a guidance track. At this time the bearing cage 4 is moved from a starting position. In this case, teeth of segment gear 9, 10 of the pinion 8 are moved corresponding teeth of segment gears 11, 12. When there is a difference occurred in a rolling motion of the roller body 2 which should be accurate to a motion of the bearing 4 by deforming or deflection parts. The pinion 8 is elastically bent in the bearing cage 4, and the shaft pin 7 or the web 13 is disposed until contacting to the stopper 14, 15 to compensate slippage.