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·Castrol Tribol ™ GR 4020 PD Series (formerly known as Tribol ™ 4020 series is a high-performance bearing grease based on highly refined petroleum base oil, thickened with a composite lithium base and containing T ribol grease additive (TGOA). TGOA is an additive in the field of anti friction and surface improvement additives. This versatile grease is designed and developed specifically for heavy-duty and high-temperature applications, which can extend the service life of bearings.

·Due to its advanced TGOA additive technology, Tribol GR 4020 PD grease performs better than traditional composite grease in terms of load-bearing capacity, wear resistance, and friction reduction. Under relatively high loads and high temperatures, this technology can improve surface roughness at a microscopic level without damaging the friction surface. If the surface roughness increases due to impact loads or sudden stops and then runs again, TGOA additives will play a role again, the surface roughness will decrease again, and the lubrication system will be optimized again.