double-rator PMDC motor two rotor R&D for all your specific requirements 1.Motor specification: rated power:6kw--13kw rated power:120v--144v rated speed:1000*2rpm---750*2rpm rated efficiency:90%--92% 2.Applications: ----marine vehicle 3.Features: without planetary gearbox the same axis but two rotor direction by two rotors. small volume, light weight, static work flange installation