.

LG steel tooth bits

CuttingSstructure

Thewear-resistanceofteethisenhancedwithpremiumtungstencarbidehardfacingonthetoothsuifacesforsteeltoothbit.Thedurabilityofpremiumtungstencarbideinsertsisimprovedwithnewformulasandnewtechniquesforinsertbit.

GaugeStructure

Multipleagugeprotectionwithgaugetrimmersontheheelandgaugeinsertsonthegaugesurfaceofthecone,tungstencarbideinsertsandhardfacingontheshirttailincreasesgaugeholdingcapabilityandbearinglife.

BearingStructure

Highprecisionrollerbearingwithtwothrustfaces.Ballslockthecone.Thelegbearingcangetlargerbyarrangingtherollersingrooveoftheconehole,soitcanreceivemoreWOB,andsuitableforhighRPM.Thrustfaceshardfacedwithwearresistantalloy.Abrasionresistanceandseizureresistanceofthebearingareimproved.

SealandLubrication

PremiumHNBRO-ring,optimalsealcompressionandcurvedsealstructurecanenhancesealperformance.thepressurecompensatorsystemandadvancedgreasecangreatlyincreasethelubricatingreliability.

ProductApplication

ItcanreceivehigherWOBandfasterrotaryspeedthanconventionalrollerbearingbits.ItissuitableforhighRPMapplications.

RecommendedDrillingParameters

IADC

WOB(kN/mm)(bitdia)

RPM(r/min)

ApplicableFormations

115

200--80

Verysoftformationswithlowcompressivestrengthandhighdrillability,suchasclay,mudstone,chalk,etc.

125

200--80

Softformationswithlowcompressivestrengthandhighdrillability,suchasmudstone,gypsum,salt,softshale,softlimestone,etc.

135

180--80

Softtomediumsoftformationswithlowcompressivestrengthandhighdrillability.suchasmediumsoftshale,hardgypsum,mediumsoftlimestone,mediumsoftsandstone,softformationwithharderinterbeds,etc.

215

180--80

Mediumformationswithhighcompressivestrength,suchasmediumsoftshale,hardgypsum,mediumsoftlimestone,mediumsoftsandstone,softformationwithharderinterbeds,etc.

Note:TheupperlimitsofWOBandRPMinabovetableshouldnotbeusedsimultancously.

Crystal

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