Wholesale API TCI tricone drill bits with discounted price in the stock from China factory for hard formations. Bit Description: IADC: 637 - TCI journal sealed bearing bit with gauge protection for medium hard formations with high compressive strength. Compressive Strength: 100 - 150 MPA 14,500 - 23,000 PSI Ground Description: Hard,well-compacted rocks such as:hard silica limestones,quarzite streaks,pyrite ores,hematite ores,magnetite ores,chromium ores,phosphorite ores and granites. Far Eastern Drilling can offer TCI bits in avariety of sizes (from 3 3/8" to 26") and all most of IADC codes.
9 7/8" is 250mm in diameter, the thread connection is 6 5/8 reg pin according to API specification. IADC537 means that tricone roller bit is suitable for drilling hardness rocks like quarzite streaks,granites, etc. The bearing is elastomer sealed to increase working life. Tungsten carbide inserts(TCI) is very hard alloy to drilling hard rocks, the heel of cones and arm-back are full inserted with Tungsten Carbide teeth. It is a common size in mining field, to drill blast hole. In mining drilling, first number for IADC code are usually 6,7,8,and the third number are usually 2 and 5. According to IADC specifications for tricone bit,"2" means standard open bearing roller bit,and "5" means sealed roller bearing bit with gauge protection. In some countries, 9 7/8"(250.8mm) is often used to drill water well and geothermal well. Drill rig is circulated by mud fluid,instead of compressing air. Therefore, for different applications, we should choose the right tricone roller bits.| Basical Specification | |
| Size of Rock Bit | 9 7/8 inches |
| 250mm | |
| Bit Type | TCI Tricone Bit |
| Thread Connection | 6 5/8 API REG PIN |
| IADC Code | IADC 637G |
| Bearing Type | Journal Sealed Bearing with Gauge Protection |
| Bearing Seal | Elastomer or Rubber/ Metal |
| Heel Protection | Available |
| Shirttail Protection | Available |
| Circulation Type | Mud Circulation |
| Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
| Nozzles | 3 |
| Operating Parameters | |
| WOB (Weight On Bit) | 28,088-67,410 lbs |
| 125-300KN | |
| RPM(r/min) | 40~180 |
| Formation | Medium formation with low compressive strength,such as medium,soft shale,medium soft limestone,medium soft limestone,medium soft sandstone, medium formation with harder and abrasive interbeds,etc. |
