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RV-C Hollowshaft Cycloidal Gear Reducer

Nabtesco RV-320-C Reducer The RV-C Series gearhead by Nabtesco is a high-precision gearhead providing extreme precision and high performance in a very compact, ready-to-mount package.
This series features a wide range of ratios (up to 400:1 by changing the first stage gear combinations) and high torsional rigidity in a single compact package. Vibrations are minimized by the patented two stage cycloidal reduction mechanism, prolonging equipment life. A center through-hole (up to 5" diameter) and off-set motor mounting options provide additional space-saving potential, by routing hoses or wiring for example. The RV-C hollow shaft series is also available in right angle configurations for even more possibilities.
The gear teeth are in continuous contact with the cycloidal pin, resulting in a gearhead with very low backlash (less than 1 arc-min), low wear and long life expectancy, and the ability to handle high shock loads -- up to five times the rated torque for emergency stops. This reducer is supported on both ends by large angular bearings to provide large moment capacities, eliminating external support devices and simplifying installation.

RV-C Variants

Item RatioRated TRQ (NM)Accel/Decel TRQ (NM)Rated Output (RPM)Backlash (Arc/Min)
RV-010C279824515less than 1
RV-027C36.5726566215less than 1
RV-050C32.54490122515less than 1
RV-100C36.75980245015less than 1
RV-200C34.861961490015less than 1
RV-320C35.613136784015less than 1
RV-500C37.3449001225015less than 1

   Backlash less than 1 arc. min.

   Hollow shaft construction

   Lost motion less than 1 arc. min.

   Allows for easy cable/pipe routing

   Easy to use design