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IADC 517


TCl bit

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Product details

Nomenclature of RUlSHI Oil Well TCl Tricone Bit Model

IADC 5 3 3
IADC Code 1, 2, 3:
Milled teeth bits from very soft to hard formations
TCl bits,from very soft to hard formations
1, 2, 3, 4
from very soft to very hard formations,bits differ in number and size of cutters/inserts
1:Standard open roller bearing
2:Standard open roller bearing,air-cooled
3:Standard open roller bearing with gauge protection
4:Sealed roller bearing
5:Sealed roller bearing with gauge protection
6:Sealed friction bearing
7:Sealed friction bearing with gauge protection



BITS SIzE (in) 8-1/2" 9-1/2" 17-1/2"
BITS SIzE (mm) 215.9 241.3 444.5
IADC CODE 517 517 517
Connectionbuckle type 4-1/2"API-REG 4-5/8"API-REG 7-5/8"API-REG
RecommendedRPM (r/min) 220-60 220-60 220-60
RecommendedwOB(KN/mm) 0.35-1.0 0.35-1.0 0.35-1.0




Suitable for extremely soft formations with low compressive strength and high drillability

   Mudstone、salt rock、soft limestone、gypsum…


Wear-resistant coating

   Carbide wear-resistant material is applied to the palm tip and the edge of the tooth palm
   Increase wear resistance and life of the bit


Carbide centralizer embedded on the surface of palm

   Reduce the wear of bit grinding formations、oblique well and horizontal well
   Improve the life of bit


Gauge inserts of high-quality tungsten carbide alloy

   Reduce the wear of bit in grinding formations
   Improve the stability and life of bit


High quality tungsten carbide tricone tooth

   Reduce wear、increase the crushing capacity and life of bit


Optimize water conservancy structure

   Enhance the self-washing ability and life of bit


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