... ) High quality aluminum alloy die cast gearbox 2) High accuracy worm gear and worm shaft 3) Less noise and lower temperature increase 4 ... , JMRV, JRV, JRV-VS, SMRV, WGR, RSTV, RV, MGW, MV-NMRV, DMRV, EWM, MKV, K-MG MGW, WPA VGWR, ALW, ALN ... , HF, SSJ, HF, BW, CHMR, ESV and so on. gearbox, gear speed reducer,worm speed reducer.