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tricone bit
1. The sealing reliability is improved by adopting the highly saturated nitrile butadiene rubber and the optimal seal and compression rate.
2. It can work in high temperature of 260°C.
3. The use of the novel low wear lubricating oil improves the seal and lubricating performance of the drill bits.
Tri-cone bits Specification
Bit size | Inch (in) | 5 7/8 | 6 | 61/8 | 6 1/4 | 7 7/8 | 8 3/8 | 8 1/2 | 8 3/4 | 9 1/2 | 9 5/8 | 9 3/4 | 9 7/8 | 12 1/4 | 13 3/4 |
Metric (mm) | 149.2 | 152.4 | 155.6 | 158.7 | 200.0 | 212.7 | 215.9 | 222.2 | 241.3 | 244.5 | 247.3 | 250.8 | 311.1 | 349.2 | |
Bit type | 437 | 437 | 437 | 437 | 447 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | |
517 | 517 | 517 | 517 | 517 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | ||
537 | 537 |
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| 537 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | ||
617 | 617 |
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| 547 | 537 | 537 | 537 | 537 | 537 | 537 | 537 | 537 |
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637 | 637 |
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| 617 | 617 | 617 | 617 |
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| 637 | 637 | 637 |
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API Regular Pin (in) | 3 1/2 | 4 1/2 | 6 5/8 | ||||||||||||
Recommended make-up torque for bit shank (KN.m) |
9.50-12.2 |
16.30-21.70 |
37.93-43.30 | ||||||||||||
Beijing Metalwork Technology Trade Co., Ltd
tricone bit (ISO9001)