... box 2.Vertical distance between the centers of worm shaft and gear varies from 25mm to 150mm With years ... Wide transmission rate, strong output torque Structure: base-mounted, input shaft, input flange, additional single or double output shafts Compact mechanical structure ... motor flanged coupling,NRV - with input shaft,NMRV-E motor flanged coupling with worm extension shaft,NRV-E with double extension ...