250mm TCI Tricone Bit / Roller Cone Bit 9 7/8" FSA537G For Gas Drilling
9 7/8" FSA537G , TCI Tricone Bit , 250mm TCI Bit , Sealed Journal Bearing , Fluid Circulation , Roller Cone Bit
SIZE AVAILABLE
Form 3 7 / 8inch to 18 1/2inch
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
| Types & IADC Code | 417 |
437 447 |
517 527 |
537 547 |
617 627 |
637 | |
| WOB | KN/mm(Bit Dia.) | 0.4~0.9 | 0.4~0.9 | 0.35~1.0 | 0.5~1.0 | 0.6~1.1 | 0.7~1.2 |
| Lb/in. (Bit Dia.) | 2285~5142 | 2285~5142 | 2000~5714 | 2857~5714 | 3428~6285 | 4000~6857 | |
| Rotation Speed (Rpm) | 140~60 | 140~60 | 125~50 | 110~50 | 100~40 | 80~40 | |
The above chart represents commonly available sizes and types, we do produce other sizes and types of rock bits which do not appear on this list. Please contact us for more information.
Design factors of roller cone bit
- Bit design depend on formation properties and hole size
- Legs are same but cutters are different
- Three logs should be equally loaded
- The main design factors are Journal bearing, amount of offset, teeth, bearing and relationship between teeth and bearing
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