Tricone Bits Cutting Structurc The durability of premium tungsten carbide inserts is improved with new formulas and new techniques.Tricone Bits Gauge Structure Gauge protection with gauge inserts on the gauge surface of the cone,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability.Tricone Bits Bearing Structure Air cooing roller bearing package.Balls lovk the cone ,which reduces the probability of cone-dropping to the minimum.Tricone Bits application It is suitable for mining applicationsCurent Availabilitv Bit Size Bit Tyep in mm 9 7/8 250.8FK512G FK542G FK612G FK732GRecommended Drilling ParametersIADCWOB(kM/mm) (Bit Dia)RPM(r/min)Applicable Formations5120.35--0.7120-60Soft formations with low compressive strength and high drillability,such as mudstone,gypaum,salt,soft shale ,softlimestone,etc.5420.4---0.8100-60Soft medium formations with low compressive strength ,such as medium soft shale, medium soft limestone,medium soft sandstone ,medium fomation with harderand abrasive interbeds,etc.6120.5---0.9100-60Medium hard formations with high compressive strength,such as hard shale,limestone, sandstone,dolomite,etc.7320.6---1.190-50Medium to high abrasive hard formations such as hardshale, hard limestone, sandstone,siltstone, basalt,granite,quarts sandstone,hard dolomite,hard limestone,pynte,etc.Note: The upper limits of WOB and RPM in above table should not be used simultancously. Crystal Web:http://www.bjleeding.com/tel: 86-01057290815mobilephone: 86-13269002360skype: bjleeding02QQ: 973987086Email:leedingj@163.com leedinglj@gmail.com
