Outer spherical surface ball bearing with low friction torque sealing structure

The utility model provides an insert ball bearing with a low-friction torque sealing structure, which comprises a circle of rubber-coated check ring mounting part and a circle of hemming cover mounting part which are annularly distributed around the axis and are arranged on each of the two sides of a bearing body, and the rubber-coated check ring mounting parts are arranged on a bearing outer ring and a bearing inner ring; the hemming cover mounting part is arranged on the bearing outer ring on the inner side of the rubber hanging check ring mounting part; the two rubber hanging check rings are buckled on the two rubber hanging check ring mounting parts in a one-to-one correspondence manner; and the upper parts of the two hemming covers are respectively clamped on the hemming cover mounting parts. The double-layer sealing structure is adopted, direct contact between the interior of the bearing and the external environment can be effectively prevented, the sealing effect of the bearing is guaranteed, the non-c