• Model NO.：244.4
• Bearing Type：Journal Bearing
• Transport Package：Polywood Boxing
• Specification：660.4mm
• Trademark：JW
• Origin：China
• HS Code：82071990
• Production Capacity：300 Piece,Month

ModelSteel Tooth Bits iadc115IADC CODE114 117 126 137 214 215 217 317Available sizes:                   

3 1/2"~ 26" larger sizes can be custom as your requirement

API regular pin(inch)2 3/8;2 7/8;3 1/2;4 1/2;6 5/8;7 5/8

Recommended make up torque(KN.M) 

4.1-4.7/6.1-7.5/9.5-12.2/16.3-12.7/38-43.4/46.1-54.2                            Advantagecompetitive price and best qualityBearing type

sealed bearing and non-sealed bearing

RM/RMT(metal sealed roller bearing)   

RR/RRT (rubber sealed roller bearing

JR/JRT (rubber sealed journal bearing)

FR(rubber sealed floating bearing)

Formationsoft,medium soft,hard,medium hard,very hard formation IADCWOBRPMApplicable Formations(KN/MM)(r/min)(Bit Dia)116  1170.35~0.8150~80Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.126  1270.35~0.9150~70Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,softshale.soft limestone,ect.136  1370.35~1.0120~60Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium soft limestone.medium soft sandstone soft formation with harder nterbeds,ect.216  2170.4~1.0100~60Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds ect.246  2470.4~1.080~50Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.417  4370.35~0.9150~70Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc.447517  5270.35~1.0140~60Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect.537  5470.45~1.0120~50Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect.617  6270.45~1.190~50Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.6370.5~1.280~40Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.





Packing of Tricone Bit