The brief description of 8 inches three cone rock roller drill bit.
8 Inches Three Cone Rock Roller Drill Bit is mainly used for drilling an oil well, water well, and geothermal well drilling engineering. Three Cone Rock Roller Drill Bit is designed and manufactured according to the standard of API 7-1. Tricone drilling bits sizes ranging from 3″ to 26″ are available, which can be applied to different formations from soft to very hard rocks.
There are two types of bearing sealing which is O-Ring sealed and Metal Sealed, the features are long life, high drilling efficiency, and low operation cost.
The specifications of 8 inches three cone rock roller drill bit.
| Three Cone Rock Roller Drill Bit Tricone Bits details | |||
| Regular Size | API reg pin | Regular Size | API reg pin |
| 3 7/8 inches (98mm) | 23/8 | 4 5/8 inches (118mm) | 27/8 |
| 5 5/8 inches (142.8mm) | 31/2 | 5 7/8 inches (149.2mm) | 31/2 |
| 6 inches (152.4mm) | 31/2 | 6 1/2 inches (165) | 31/2 |
| 7 1/2 inches (190mm) | 41/2 | 7 5/8 inches (193mm) | 41/2 |
| 8 1/2 inches (215.9) | 41/2 | 9 1/2 inches (241. .3mm) | 41/2 |
| 10 5/8 inches (269.8mm) | 65/8 | 11 5/8 inches (295.3mm) | 65/8 |
| 12 1/4 inches (311.15mm) | 65/8 | 13 5/8 inches (346mm) | 65/8 |
| 15 1/2 inches (393mm) | 75/8 | 16 inches (406.0mm) | 75/8 |
| 17 1/2 inches (445mm) | 75/8 | 26 inches (660mm) | 75/8 |