Features of NMRV series worm-gear speed reducer: 1.occupied little space 2.self ... 4.good cooling effect NMRV series worm-gear speed reducer,such NMRV025, NMRV030 gear reducer, gear speed reducer Features: 1) High ... aluminum alloy die cast gearbox 2) High accuracy worm gear and worm shaft 3) Less noise and lower temperature ... ,NMRV063,NMRV075,NMRV090,NMRV110,NMRV130 NMRV 130 worm-gear speed reducer