Product Description

Specification of Air-cooling Roller bearing bits Application: Mining. Bearing: Air-Cooling Roller Bearing. Cutting structure: Insert bit, conical spherical compacts in inner row and wedge compacts in outer row. Formation: Soft and medium with low compressive strength and high drillability, such as soft shale, clay and soft limestone, etc  Preponderance: These bits' jet system designs for achieving more footage and higher ROP. When these bits are used in low water content soft formation, these bits have high ROP, long working life and better gage protection. Size available: From 5 7/8" (149.2mm) to 12 1/4" (311.2mm). Note: Sizes and types that are not shown above can be customized according to specific drilling requirements.