Measuring device for radial internal clearance of oscillating bearing

The invention relates to a measuring device for the radial internal clearance of an oscillating bearing. The measuring device comprises a feeding system, a measuring system, a clamp system and a machine frame, wherein the feeding system is controlled by a controlling system, the feeding system is composed of a left feeding system body and a right feeding system body, the left feeding system body and the right feeding system body are symmetrically arranged on the two sides of the clamp system, and the measuring system comprises a displacement sensor and a dovetail groove sliding bench. In addition, the left feeding system body and the right feeding system body are driven by a servo motor. By means of the structure, the measuring device is high in detecting accuracy in a radial internal clearance measuring process and high in automation in a detecting process.