Positive displacement blowers (including those manufactured by Gardner-Denver, Sutorbilt, DuroFlow, and Roots) require unique lubricants to ensure the proper operation of these machines. With high film strengths and exact oil weights, ISO VG 220 blower lubricants are designed to increase the productivity of these machines while decreasing drag and eliminating the risk of system failure. In addition to the above-average lubrication characteristics, these oils also resist rust and oxidation formation and extend systems life.
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. These numbers refer to the standard testing mechanisms used to determine how much resistance to flow (i.e. viscosity) these oils demonstrate.
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