Gearboxes calling for an extreme pressure (EP) lubricant are heavy-duty machine components that operate at extremely high pressures and very high temperatures - these components are often referred to as heavily-loaded. Though these AGMA 5 EP, ISO VG 220, Extreme pressure gear lubes oils do contain an EP additive, they are also formulated with other additives that contribute to the lengthy lubricant life as well as the life of the machine in which employed. Considering the environments in which these machine components operate, an Extreme Pressure (EP) Gear Lube may be the only option for lubrication - however, check with OEM specifications to be certain the machine can handle the sometimes unsuitable EP additive.
ISO VG 220 oil has a midpoint kinematic viscosity of 220 mm2/s, also referred to as centistokes (cSt). The midpoint is derived by taking the average of both the minimum and maximum kinematic viscosities. In the case of ISO VG 220 oil, those numbers are 198 cSt and 242 cSt, respectively. AGMA 5 lubricants have a minimum viscosity of 198 mPa.s and a maximum viscosity of 242 mPa.s. These numbers refer to the standard testing mechanisms used to determine how much resistance to flow (i.e. viscosity) these oils demonstrate.Products
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