Square Spiral Bevel Gearboxes are available in power ratings and gear transmission ratios ranging from 1:1 to 5:1 depending on model. Efficiency is 94%. Spiral bevel gearing to assure low noise level at higher operating speeds. Bevel gearboxes casings have a square box base form, with six completely machine finished outer faces and varnished inner parts. Each face is supplied with mounting holes, while the finished hubs and flanges show outer tolerance centerings. Universal mounting dimensions assure maximum design flexibility. Rugged cast iron housing designed to provide rigid gear and bearing support. Available in various shaft style configurations, for example: Input and output with solid shaft, Output on both sides or on one side. Input with solid shaft, Output with hollow shaft and feather key groove. Input with hollow shaft and flange, Output with solid shaft on both sides or on one side. Input with hollow shaft and flange, Output with hollow shaft and feather key groove.