... of the incomplete spherical piston in spherical pump comprehensively. Finally, to search the low-friction and wear-resistance structural pattern of the piston, and enhance the durability of spherical pump. Design/methodology/approach The non-linear frictional moment model for incomplete spherical piston...

...Dong Guan; Li Jing; Junjie Gong; Zhengwei Yang; Hui Shen Purpose Rotary disc is a key component in the compact spherical pump, connecting shaft and piston, bearing hydraulic force conformally and constituting dynamic working chambers alternatively. Motion of rotary disc comprises two components...

...Dong Guan; Harry H. Hilton; Zhengwei Yang; Li Jing; Kuan Lu Purpose This paper aims to investigate the lubrication regime in spherical pump, especially under different structural parameters and operational conditions. Design/methodology/approach A ball-on-plane configuration is adopted...