NMRV 075 Worm Gearbox : 1.occupied little space 2.self locking 3.fast stop 4.good cooling effect NMRV series worm Gearbox , such ... and worm shaft 3) Less noise and lower temperature increase 4) Easy mounting and linking, high efficiency 5) Power: 0.06 ... :NMR025,NMRV30,NMRV40,NMRV050,NMRV063,NMRV075,NMRV090,NMRV110,NMRV130 NMRV 075 Worm Gearbox