...Dong Liu; Renpan Li; Guangwu Zhou; Pei Luo; Ao Mei Purpose Frictional torque is a critical parameter in evaluating the dynamic performance of space-grade angular contact ball bearings. Under extreme vacuum conditions, the frictional torque characteristics of these bearings are significantly...

... for demonstrating the advantages of textured race. Design/methodology/approach Texture was created on stationary race of the test ball bearing (51308) using nano-second pulsed Nd: YAG laser. Performance parameters (frictional torque, temperature rise and vibrations) of textured ball bearings were measured under...

... on bearing surface. The effects of partial groove pattern on the bearing performance parameters, namely, fluid film pressure, load carrying capacity, frictional power loss and frictional torque, are studied in detail. Findings The numerical results show that the values of maximum fluid film pressure...