Right angle gear reducers speed ratio 1:1 or 2:1,transmission efficiency up ... %.cast iron or aluminum gearbox are available. NOSEN Right angle gear reducers RNV-Series,cubic shape of gearbox.Model: RNV-065,RNV ... :1,2:1. Special ratio,following clients' ordersTransmission Efficiency: 95%Gear Oil: HD320~680Max Revolutions: 1450 rpmAmbient Temperature: -20ºC~+80 ...