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 drearful conditions

    4). High radiating efficiency

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

    6). Suitable for omnibearing installation

    7). Every product must be tested before sending

    8). Certificate of quality: ISO9001:2008