NORD helical gear reducers features high quality helical gearing up to AGMA Class 13, high performance inverter/vector duty motors and brakemotors, protective features for severe duty and washdown environments, AUTOVENT breather regulates internal pressure and keeps contaminants out (US) and stainless steel (316) protective paint coating – USDA/HI compliant (US) Sizes: 6, Torque range: 50-700Nm, Performance: 0.12 ~ 7.5KW Ratio: 1.92:1 ~ 488,07: 1, efficiency: >95%