...Ankit Saxena; Deepak Kumar; Naresh Tandon The present study explores the performance of novel vegetable oil–based greases containing nano-CaCO 3 as an additive. A series of greases with varying nanoparticle concentrations (0–4% w/w) are evaluated on a four-ball tester machine under a standard...

...Miaojie Wu; Xu Han; Yourui Tao; Jiaxing Pei In this paper, the application scope of the average flow model is extended to grease lubrication considering the non-Newtonian characteristics. First, flow factor expressions applicable to both Newtonian fluids and non-Newtonian fluids are derived...

...Sooraj Singh Rawat; A. P. Harsha; O. P. Khatri; Rolf Wäsche Pristine, reduced, and alkylated graphene oxides are applied as lubricating additives in paraffin grease. It has revealed that their crystalline structure governs the tribological properties of grease for steel tribo-pair...

...Hiroyuki Ohta; Shinya Hayashi; Soichiro Kato; Yutaka Igarashi This paper deals with effects of grease types on vibrations and acoustic emissions (AEs) of linear-guideway type recirculating ball bearings with a millimeter-sized artificial defect in the carriage. First, the vibration and AE of one...