Main materials

1). Housing:die-cast aluminum alloy(frame size:025 to 090) ;cast iron(frame size:110 to 150);

2). worm:20Cr,carbonize&quencher heat treament make the hardness of gear's surface up to 56-62 HRC, retain carburation layer's thickness between 0.3 and 0.5mm after precise grinding;

3). worm wheel:wearable stannum bronze alloy.

Features

1). Made of high-quality aluminum alloy,light weight and non-rusting

2). Large output torque

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

4). High radiating efficiency

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

6). Suitable for omnibearing installation

7). Every product must be tested before sending