Fully-circumferential sliding radial test and loading device

The invention relates to a fully-circumferential sliding radial test and loading device. The device comprises a supporting base; the upper end surface of the supporting base is provided with a supporting frame with a circular cross section; an annular long groove is formed in the circumferential direction of the supporting frame; a direction loading tester is arranged in the annular long groove; the direction loading tester can rotate by 360 degrees along the annular long groove in a position lockable manner; a plurality of sets of connecting threaded pin holes are annularly formed in the outer end surface of an air bearing; the front end of the direction loading tester can be connected to different positions of the air bearing through the threaded pin holes; a tested loading spindle is arranged in the air bearing in a manner that the tested loading spindle passes through the air bearing; the bottom surface of the supporting frame is fixedly provided with a V-shaped block; the air bearing is disposed in the s