College of Metrology&Measurement Engineering;
China Jiliang University;
Hangzhou;
310018;
China;
College of Mechanical Engineering;
Zhejiang University of Technology;
Hangzhou;
310014;
China;
Zhijiang College;
Zhejiang University of Technology;
Shaoxing;
312030;
China;
Cycloid gerotor pump; radial force; oil groove structure; pressure distribution;