Abstract: This paper briefly describes the operating principle and characteristics of the single spherical roller bit(SSRB). The geometric and kinematic basic equations of SSRB are established by means of space analytical geometry method F the testing analysis of the bearing load is made by the experimental method; the computer simulation program is designed according to the kinematic basic equation of SSRB. The designs of geometric structure and performance of SSRB can be made by the methods mentioned in this papeer,and the comparision of a number of design plans can be made in a short period of time.

Key words: Analysis, Testing, Design, Geometry, Artificial simulation, Single spherical roller bit