Feature
1.Force balanced cutting structure.
2.Better load burden balace.
3.High strength,high flexibility,high temperature and high wear resistance.
4.Locking roller ball to adapt to high speed.
5.The use of high strength high tungsten carbide teeth.
6.Cone bit to adapt to soft,medium and hard of various strata.
7.Reasonable price and long uselife.
Available size
No | Size Available | |
Inch(in) | Metric(mm) | |
1 | 7 7/8 | 200.0 |
2 | 8 1/2 | 215.9 |
3 | 9 1/2 | 241.3 |
4 | 12 1/4 | 311.1 |
5 | 17 1/2 | 444.5 |
No | IADC Code | Recommendation | |
WOB(KN/mm) | Rotary Speed (rpm) | ||
1 | 117 | 0.35~0.8 | 240~80 |
2 | 127 | 0.35~0.9 | 240~70 |
3 | 437 447 | 0.35~0.9 | 240~70 |
4 | 517 527 | 0.35~1.0 | 220~60 |
5 | 537 547 | 0.45~1.0 | 220~50 |
6 | 617 627 | 0.45~1.1 | 200~50 |
7 | 637 | 0.5~1.1 | 180~40 |
