Double-sealing-ring square flange type linear motion ball bearing

The utility model discloses a double-sealing-ring square flange type linear motion ball bearing which comprises a bearing sleeve, an external thread is arranged on the surface of the bearing sleeve, the bearing sleeve is in threaded connection with a flange through the external thread, a mounting hole is formed in the side face of the flange, a wear-resisting pad is arranged on the right side of the bearing sleeve, and the wear-resisting pad is arranged on the right side of the bearing sleeve. A bolt is arranged on the right side of the wear-resisting pad, the wear-resisting pad is in threaded connection with the bearing sleeve through the bolt, sliding parts are arranged in the bearing sleeve, and the number of the sliding parts is not less than two. The installation position of the flange can be conveniently adjusted by arranging an external thread, rotation of a rolling ball is facilitated by arranging a positioning groove and a clamping groove, stability is achieved, and the stability of the device in lon