Under normal conditions of speed and load, two metal surfaces are separated by a lubricant film known as hydrodynamic lubrication. An increase in load or decrease in speed reduces the film, allowing metal-to-metal contact and raising the temperature of the contact zone due to friction.The heat causes the lubricant to lose viscosity, which weakens its film strength and its ability to minimize contact. Under these conditions, lubrication changes from hydrodynamic to elasto-hydro-dynamic (EHD) to mixed film to boundary lubrication.
Duolec® continues to provide protection when EHD, mixed and boundary conditions are present. As heat increases, Duolec® is activated, working in stages to provide a dual layer of AW and EP protection. In EHD and mixed film conditions, the AW components of Duolec® kick in. After loads become even greater, the EP performance is activated. When incorporated into gear oils, Duolec® reacts quickly with the changing conditions to provide protection. The friction- and wear-reducing capabilities of Duolec® can be seen in the test results below.
Duolec® additive technology is used exclusively in LE lubricants, helping our customers worldwide protect their gearboxes and experience longer lubricant intervals, fewer part replacements and less downtime.
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