Boston Gear 73250J Gear Reducer Spline Shaft 50:1 Ratio 1.73 Input HP. If you have additional questions regarding an item, please contact our staff before purchasing. SIGMA Surplus is a division of SIGMA Equipment INC. We stock a wide variety of items ranging from small parts to complete machines. SIGMA Surplus is a Division of SIGMA Equipment INC. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. Powered by SixBit’s eCommerce Solution. The item “Boston Gear 73250J Gear Reducer Spline Shaft 501 Ratio 1.73 Input HP” is in sale since Tuesday, January 19, 2021. This item is in the category “Business & Industrial\Industrial Automation & Motion Controls\Mechanical Power Transmission\Gearboxes & Speed Reducers”. The seller is “sigmasurplus” and is located in Evansville, Indiana. This item can be shipped worldwide.