There is a great consumption of grease in an excavator (∼200 Kg/year). This big amount of lubricant is poured directly to the environment. A grease based in sunflower oil and polymer thickener has been developed. An extensive tribological characterization has been carried out in order to ensure a good compromise between EP and AW properties so that the grease could be used in two different applications: in the reduction gear (crown) and in the articulations (bushing/pin). The performance of the biogrease has been compared with two reference mineral lubricants.
Sunflower Based Grease for Heavy Duty Applications
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Barriga, J, Igartua, A, & Aranzabe, A. "Sunflower Based Grease for Heavy Duty Applications." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 1. Washington, D.C., USA. September 12–16, 2005. pp. 481-482. ASME. https://doi.org/10.1115/WTC2005-63484
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