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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