The strength and wear resistance of inserts are improved by using carbide inserts with high strength and extend the service life of the bearing, and with the ability of applying high WOB and RPM, The service life of the bearing is further extended by adopting harder and more wear resistant material for thrust bearing. Uses and Applicable Ranges of the Bit
Uses: The bit is used for air drilling, e. G., for drilling operations in open coal mine, iron mine and non-ferrous mine, as well as petroleum air drilling.
Applicable ranges: The bit is applicable for drilling formations and medium hard formations, such as limestone, sandatone, dolomite and firestone, etc.
Basic Specifications of the Bit: IADC Code: 6-3-2
Rock Bit Diameter: 9 7/8 inches(250mm))
Type of the bearing: Roller_ball_roller_thrust button
Inner rows and top row: Conical compacts
Heel row: Wedge compacts
Shank; 6 5/8"REG(API)
Operating Recommendations: Weight on Bit(WOB) : 35000-65000lbs