Industry Oilfield Application Pump Jack Original Drive Description V-belt drive with three single C128 V-belts on a 5” driveR and a 32” driveN sheave on a 7-1/2 HP, 865 RPM electric motor driving a gearbox Problem The outdoor drive is subjected to extreme temperatures ranging from -55 °F to 115 °F throughout the year. When it rains or snows, the V-belts slip and fail prematurely. Even with constant maintenance to adjust tensi

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