Soft Ground Hole Opener with Roller Cones for Mining

Opener Drill Bit/Rock Reamers/Assembled Bits Soft Ground Hole Opener with Roller Cones for Mining 1. Cutting Structure The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer. The pilot is three cone bit( tricone bit ). 2. Seal and Lubrication High performance HNBR O-ring for bearing seal and