1. Roller bits for Mining and Rock Drilling

The strength and wear resistance of inserts are improved by using carbide inserts with high strength and high wear resistance. Surface of the high precision bearing is heat treated by using advanced heat treatment processes to improve the load capacity and service life of the bearing.

The service life of the bearing is further extended by adopting harder and more wear resistant material for thrust bearings. The preventing reflux structure has a dual function: it avoids air counterflow and dust entering into the bearing when the air-compressor stops accidentally, and separates air and water to avoid water entering the bearing during normal operation.

2. Roller bits for Oil Drilling

This series tricone bit uses a sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased. Thrust bearing surfaces are hardfaced and treated with friction reducing technology. Ball locked cone design makes it suitable for high rotary speeds.

3. Steel Teeth Tricone Bits

This series uses journal bearings with hardfaced head bearing surfaces. Cone bearings are inlaid with friction-reducing alloy and silver-plated, greatly improving load capacity and seizure resistance. The O-ring seal is made of high-saturated buna-N for better wear resistance and reliability.