RV series of worm geared motor that our company produce included NMRV and NRV. Their performance features : > ZK worm profile > high anti-wear material. > Applications with especially high inertia, > Applications with high dynamic strain on the case of the reduction unit, > In places with T °   under - 10 ° C or over 60 ° C > Use in environments pressures other than atmospheric pressure. > Avoid applications where even partial immersion of the reduction unit is required.