... to 95%.cast iron or aluminum gearbox are available. NOSEN spiral bevel gear reducer RNV-Series,cubic shape of gearbox.Model ... 160,RNV-200,RNV-260Function: right angles change transmission directionsConfigurations: spiral bevel gears,bearings,gearbox,input and output shaftsMaterials: 1 ... .Spiral bevel gears: alloy steel,case hardened,be of high ...