1.Reliable and stable sealing structure, metal seal and rubber seal optional.
2.The palm bearing surface is hard-coated with a hard alloy layer, and the roller bearing is silver-plated, which improves the bearing capacity and the resistance to seizure.
3.Adopt high-strength and high-toughness cemented carbide teeth to improve the impact resistance of teeth and reduce the rate of broken teeth.
4.Palm back alloy full coverage improves the abrasion resistance of the palm.
It used for make Roller cone hole opener for water well , oil well and back reamer for Horizontal Directional Drilling , Crossing river road
