Abstract Gearboxes are usually lubricated with oil or grease to reduce friction and wear dissipate heat. However, gearbox applications that cannot be grease, for example in the space food industry, commonly solid lubricants. Especially lubricants a lamellar sliding mechanism like graphite molybdenum disulfide (MoS 2 ) diamond-like carbon (DLC) coatings can enable very low coefficients of fricti...

In this paper the authors theoretically evaluated film thickness in a miniature angular contact ball bearing grease and oil lubricated conditions correlated with variation of electrical resistance experimentally determined by using tribometer CETR UMT-2. For considering base viscosity. The rotational speed inner race varied between 1 500 rpm axial load applied on 7000C was 8.1 N. IVR EHD lubric...

In industrial chain drives, the sleeve slides on pin and impact loading occurs due to polygon effect, while collision between ball cage usually produces an impact-sliding motion in rolling element bearings. Aiming at addressing occurrence of surface damage caused by motion, a ball–disk test rig employing optical interference technology was designed built realize load variation. Two kinds commer...