2.worm: 20CrMnTi, carbonize heat treatment, HRC 56-62, thickness 0.3mm to 0.5mm after precise grinding.

3.worm wheel: wearable stannum bronze alloy.

4.Speed reducer structure features:

1.made of high-quality aluminum alloy, light in weight and non-rusting

2.large in output torque.

3.smooth in running and low in noise,can work long time in dreadful conditions.

4.High in radiating efficiency

5.Good-looking in appearance,durable in service life and small in volume.

6.suitable for universal mounting.