Abstract: The present invention provides a friction minimized bearing structure, which is operated in a same-speeded and contrary-directional manner, and actives an inner ring and an outer ring to rotate synchronously in contrary directions. Otherwise, rollers are mounted on a supporting gear module, the roller contacts with the outer ring of the bearing structure and rotate in contrary directions within the same rotation speed, therefore achieves a friction-minimized bearing structure. The bearing structure of present invention makes the relative velocity between the balls and the inner ring, and the outer ring is relatively down to zero or nearly zero. With such manner, an inner friction between the balls, inner ring and the outer ring may be relatively down to zero or nearly zero so as to achieve the objective of minimizing the friction.

Abstract: A mechanism for adjusting the rotation direction and the speed of an inner ring and an outer ring of a rotary bearing is provided. The mechanism includes a base, a main bearing module being through the base, multiple supporting rotary bearings mounted on the base and surrounded the main bearing module, and a transmission mechanism. In the application for contact type bearing, it also includes multiple rolling elements. In the application for non-contact type bearing, it also includes a fluid. The present invention provides with the transmission mechanism to connect with the main bearing module to make the inner ring and the outer ring rotate properly.

Abstract: A mechanism for adjusting the rotation direction and the speed of an inner ring and an outer ring of a rotary bearing is provided. The mechanism includes a base, a main bearing module being through the base, multiple supporting rotary bearings mounted on the base and surrounded the main bearing module, and a transmission mechanism. In the application for contact type bearing, it also includes multiple rolling elements. In the application for non-contact type bearing, it also includes a fluid. The present invention provides with the transmission mechanism to connect with the main bearing module to make the inner ring and the outer ring rotate properly.