NMRV Worm Gearbox with High quality small size and high efficiency Our RV series speed gearmotor, 1) Small size ... , compact, lightweight, and saves space for mounting2) Runs steadily with low ... shaft, various input and output types, conjoins with other transmission machinery easily5) Specification: RV25~185 ... 5:1~100:1 NMRV Worm speed reducer with square flange