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The teeth are processed by milling, and the teeth are all wedge tooth.
Using floating bearing structure.
Using high -density metal sealing.
Steel ball lock the tooth wheel to adapt to high speed
New wear -resistant materials for steel drilling teeth,increased the drill head cutting tooth life while maintaining the high drill speed of the steel tooth drill.
| Tricone Bits | |||
| Size | IADC Code | API Thread | |
| inch | mm | ||
| 3 7/8'' | 98.4 | 126/216/637 | 2 3/8 |
| 4 7/8'' | 117.4 | 126/216/517/537/637 | 2 7/8 |
| 5 1/4'' | 133.3 | 126/216/517/537/637 | 3 1/2 |
| 5 5/8'' | 142.8 | 126/216/517/537/637 | 3 1/2 |
| 5 7/8'' | 149.2 | 126/216/517/537/637 | 3 1/2 |
| 6'' | 152.4 | 126/127/216/517/537/617/637 | 3 1/2 |
| 6 1/4'' | 158.7 | 126/127/216/517/537/617/637 | 3 1/2 |
| 6 1/2'' | 165 | 126/127/216/517/537/617/637 | 3 1/2 |
| 7 1/2'' | 190 | 126/216/517/537 | 4 1/2 |
| 7 5/8'' | 193 | 126/216/517/537 | 4 1/2 |
| 7 7/8'' | 200 | 126/216/517/537 | 4 1/2 |
| 8 1/2'' | 215.9 | 117/127/217/437/517/537/617/637 | 4 1/2 |
| 9 1/2'' | 241.3 | 117/127/217/437/517/537/617/637 | 6 5/8 |
| 9 7/8'' | 250.8 | 117/127/217/437/517/537/617/637 | 6 5/8 |
| 10 5/8'' | 269.8 | 117/127/217/437/517/537/617/637 | 6 5/8 |
| 11 5/8'' | 295.3 | 117/127/217/437/517/537/617/637 | 6 5/8 |
| 12 1/4'' | 311.1 | 117/127/217/437/517/537/617/637 | 6 5/8 |
| 13 5/8'' | 346 | 127/217/517/537/617/637 | 6 5/8 |
| 14 3/4'' | 374.6 | 127/217/517/537/617/637 | 7 5/8 |
| 17 1/2'' | 444.5 | 114/115/125/215/515/535/615/635 | 7 5/8 |
| 26'' | 660.4 | 114/115/125/215/515/535/615 | 7 5/8 |
When working under the ground, the drilling pressure on the tricone bit is used on the rock through the teeth, which crushes the rock. During the rolling process of the tooth wheels, a single tooth and a two -toothed intercourse are low, and the position of the center of the dental wheels is high and low, causing the drill bit to produce vertical vibration. This impact, crushing effect is the main way of crushing rock in the tricone bit.
