Wholesale TCI Tricone Rock Drill Bit is for medium to hard rock formation in stock. Bit Description: IADC: 417 - TCI journal sealed bearing bit with gauge protection for soft formations with low compressive strength and high drillability. Compressive Strength: 65 - 85 MPA 9,000 - 12,000 PSI Ground Description: Long intervals of very soft poorly compacted shales, dolomites, sandstones, clays, salts and limestones. Far Eastern Drilling can offer tricone drill bits in a variety of sizes (from 3” to 26”) and most of IADC Codes.
Tricone rock bit IADC417 8.5"(215.9mm) 1>Bit size 8.5"(215.9mm) with thread connection4 1/2 reg pin is for deep well drilling like oil and gas well drilling, and it is also a regular size in horizontal directional pilot hole drilling. We also called 215mm or 216mm.It is tungsten carbide insert bit. 2>We have Elastomer sealed bearing with normal quality and price, and Metal-face sealed bearing with higher performance and price. 3>If it is very deep well drilling, the rotary speeed is high, so we suggest Metal-face sealed bearing tricone bits in drilling depth exceeds 1000 meters, for hard rock and long distance trenchless pilot hole drilling that length exceeds 300 meters we also recommend metal-face sealed bearing tricone bits. 4>If it is water well drilling, shallow well drilling or shorter distance trenchless pilot hole drilling projects, then elastomer(rubber) sealed bearing tricone bits has better cost performance.| Basical Specification | |
| Size of Rock Bit | 8.5 inches |
| 215.9 mm | |
| Bit Type | TCI Tricone Bit |
| Thread Connection | 4 1/2 API REG PIN |
| IADC Code | IADC 417G |
| Bearing Type | Journal Sealed Bearing with Gauge Protection |
| Bearing Seal | Elastomer/Rubber |
| Heel Protection | Available |
| Shirttail Protection | Available |
| Circulation Type | Mud Circulation |
| Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
| Total Teeth Count | 77 |
| Gage Row Teeth Count | 41 |
| Number of Gage Rows | 3 |
| Number of Inner Rows | 6 |
| Jounal Angle | 33° |
| Offset | 4.8 |
| Operating Parameters | |
| WOB (Weight On Bit) | 16853-43592 lbs |
| 75-194KN | |
| RPM(r/min) | 150~70 |
| Recommended upper torque | 9.5-12.2KN.M |
| Formation | Soft formation of low crushing resistance and high drillability. |
