Results 11 to 20 of about 9,360 (219)
Film thickness in a ball-on-disc contact lubricated with greases, bleed oils and base oils [PDF]
, 2012 Three different lubricating greases and their bleed and base oils were compared in terms of film thickness in a ball-on-disc test rig through optical interferometry. The theoretical values calculated according to Hamrock's equation are in close agreement
Björling, M. +5 more
core +1 more source
Some azine and azole derivatives as antioxidant additives for lithium lubricating grease
Egyptian Journal of Petroleum, 2013 Lubricating greases undergo extensive deterioration under the operation conditions and storage. Hydrocarbon chain is one of the major factors resulting in loss of the base fluid quality by formation of products having negative effects on the ...
Reda M. Fikry +4 more
doaj +1 more source
Lubricants, 2014 Polypropylene (PP) thickened lubricating grease exhibits high oil bleed tendency at low temperatures, which makes it a promising candidate for low temperature applications.
Ravi Dixena +2 more
doaj +1 more source
Numerical Visualization of Grease Flow in a Gearbox
Chinese Journal of Mechanical Engineering, 2023 Lubricating greases are widely used in e.g. open gear drives and gearboxes with difficult sealing conditions. The efficiency and heat balance of grease-lubricated gearboxes depend strongly on the lubrication mechanisms channeling and circulating, for ...
Hua Liu +3 more
doaj +1 more source
On Monitoring Physical and Chemical Degradation and Life Estimation Models for Lubricating Greases
Lubricants, 2016 Degradation mechanisms for lubricating grease are categorized and described. An extensive survey of the available empirical and analytical grease life estimation models including degradation monitoring standards and methods are presented.
Asghar Rezasoltani, M. M. Khonsari
doaj +1 more source
Lubricant Additive Containing a Novel Nano Hybrid for improving Lithium Greases Extreme Pressure and Anti Wear Properties [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2023 A novel lubricating grease additive comprised of a new nanohybrid and a suitable base fluid has been proposed in this research. The addition of this nano additive (5 wt%) to the lithium grease improves 1.5 times the extreme pressure property and can ...
Mahshad Alaei, Amir Zamen
doaj +1 more source
Friction, 2023 This work investigated the temperature changes inside the bulk of lubricating greases under controlled high-shear stress conditions (250–500 s−1). For this purpose, a newly developed temperature-measuring cell called Calidus was successfully tested.
Leif Ahme +2 more
doaj +1 more source
Effect of Thickener Particle Geometry and Concentration on the Grease EHL Film Thickness at Medium Speeds [PDF]
, 2016 The aim of this paper was to understand the parameters influencing the grease film thickness in a rolling elastohydrodynamically lubricated contact under fully flooded conditions at medium speeds. Film thickness measurements were taken under pure rolling
Bosman, R. +4 more
core +5 more sources
Tribological Stress of Lubricating Greases in the Light of System Entropy
Lubricants, 2016 Lubricating greases show a structural degradation due to friction stress. The shear process dissipates energy. This results in a breakdown of the thickener structure, heat and entropy generation. Tribo-systems are energy driven systems.
Erik Kuhn
doaj +1 more source
On the Flow Dynamics of Polymer Greases
Lubricants, 2022 In this paper, the flow dynamics of polymer greases was investigated using micro-particle image velocimetry. Polymer greases have a different thickener structure, compared to widely used lithium-based greases, and they have the well-known ability to ...
Josep Farré-Lladós +4 more
doaj +1 more source