The invention discloses a rolling ball typed universal wheel, which consists of rolling ball bulk and case with opening on the bottom, wherein several antifriction devices are set in the case, which contains a support device to rotate around the fixation axle; the fixation axle directs the spherical center of rolling ball bulk; the first rolling part and second rolling part are in the support device; the first rolling part is the rolling wheel to rotate along itself axle, whose rolling surface touches the spherical face of rolling ball bulk; the second rolling part contains several spherical balls in the ring-shaped rail or the rolling wheel to rotate along itself axle, whose rolling surface is next to the inner surface of case directly or indirectly. The rolling abrasion between the first rolling part and rolling ball bulk as well as the second rolling part and touching face reduces the friction resistance greatly. |