Roller cone bits

1. Pin connection
2. Pin shoulder
3. Nozzle nail lock
4. Lug
5. Shirttail insert
6. Gage insert
7. Gage row insert
8. Cutter cone
9. Air exit slot
10. Nose inserts
11. Thrust plain bearing
12. Inner roller bearing
13. Ball bearing
14. Outer roller bearing
15. Shirttail hardfacing
16. Ball retaining plug
17. Air passage to bearing
18. Nozzle
19. Air tube
20. Back flow valve
21. Retaining ring

 

  • Simple, economical design.
  • Central jet
  • Standard open roller bearing with air flushing
  • Spring-loaded back flow valve

  • Improved design
  • Side jet
  • Standard open roller bearing with air flushing
  • Leaf-type back flow valve

  • Wide design range
  • Side or combined jet (optionally, four jets)
  • Open roller bearing made of high quality materials
  • Leaf-type back flow valve
  • Options availability: cone hardfacing, improved carbide etc.

  • Premium materials application
  • Side or combined jet (optionally, four jets)
  • Leaf-type back flow valve
  • Sealed roller bearing
  • Enhanced performance in holes where water is present
  • Options available: cone hardfacing, improved carbide etc.

  • Superior bearing performance for severe drilling conditions and heavy-duty rigs
  • Side jet or combined jet (optionally, four jets)
  • Sealed journal bearing made of high quality wearresistant materials
  • Leaf-type back flow valve
  • Options availability: cone hardfacing, improved carbide etc.
  • Application of high quality wear-resistant components and materials

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443004, Russian Federation, Samara,
1, Groznenskaya Str. 
Tеl. / Fax: +7 (846) 300-8000

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