Double NMRV worm gearbox;Double Aluminum case  worm gearbox

1) Made of high-quality aluminium alloy,light weight and non-rusting.2) Large output torque3) Smooth running and low noise

4) High radiating efficiency.5) Good-looking appearance ,durable service life and small volume.6) Suitable for omnibearing installation.

7) Ratio :72.6-317

Double Aluminum case worm gearbox