Screw Conveyor Engineering Guide Horsepower Calculation. Use the Kase Horsepower Calculation tool to aid in the design of a conveyor system Use the Kase Horsepower Calculation tool to aid in the design of a conveyor system Skip to content Kase Conveyors Belt Conveying Belt Conveyors;, Example A 10inch conveyor 35 feet long with a capacity of 10 tons per hour at 45 RPM has been .