Wholesale API oil tricone rock drill bits in stock with discounted price from China factory Far Eastern Drilling can offer TCI tricone bits and steel teeth tricone bits in a variety of sizes (from 3” to 26”) and most of IADC Codes. IADC: 237 is Steel tooth journal sealed bearing bit with gauge protection for medium to medium hard formations with high compressive strength.The compressive strength is 20-40MPA and 3000-6000PSI/20 - 40 MPA/3,000 - 6,000 PSI. IADC237 triocne bits will be used for sandstones with streaks of quartz, hard limestone or chert, crystalline dolomites, hematite ores, and hard shales.| Basical Specification | |
| Size of Rock Bit | 12 1/4 inches |
| 311.2 mm | |
| Bit Type | Steel Teeth Tricone Bit / Milled Teeth Tricone Bit |
| Thread Connection | 6 5/8 API REG PIN |
| IADC Code | IADC237G |
| Bearing Type | Journal Bearing |
| Bearing Seal | Elastomer sealed or Rubber sealed |
| Heel Protection | Available |
| Shirttail Protection | Available |
| Circulation Type | Mud Circulation |
| Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
| Total Teeth Count | 147 |
| Gage Row Teeth Count | 40 |
| Number of Gage Rows | 3 |
| Number of Inner Rows | 9 |
| Jounal Angle | 33° |
| Offset | 6.5 |
| Operating Parameters | |
| WOB (Weight On Bit) | 35,053-83,813 lbs |
| 156-373KN | |
| RPM(r/min) | 300~60 |
| Recommended upper torque | 37.93KN.M-43.3KN.M |
| Formation | Medium to medium hard formation of high crushing resistance. |
Find the siutable rock drilling bits is the first step befor drilling project. We will share some details about how to choose right tricone bits? A.There are 2 types of triocne bits based on teeth type. 1) Steel ttooth tricone bits (IADC1**,IADC2**,IADC3**) 2) TCI tricone bits (IADC4**,IADC5**,IADC6**,IADC7**,IADC8**) B.There are 4 types of tricone bits based on bearing type. 1) Journal bearing (IADC**6,IADC**7) 2) Roller bearing (IADC**4,IADC**5) 3) Open bearing (IADC**1) 4) Air bearing (IADC**2,IADC**3) C Some details: 1) Soft formation better choose steel tricone bit,e.g mud. 2) Hard formation better choose TCI tricone bit,e.g limestone. 3) Roller bearing, journal bearing are mostly used in water well drilling projects. 4) Open bearings, air bearing, roller bearing are mostly used in mining projects. 5) Chosse the tricone bit as per compressive strength | PSI | IADC code | Formation |
| 0~4000 | IADC1** | clays and sandstones, salts |
| 4000~8000 | IADC2** | marl limestones，gypsum, and hard coals. |
| 8000~15000 | IADC3** | sandstones with quartz binder, hard sandstones, hard quartz shales, magma, and metamorphic rocks. |
| 15000~25000 | IADC4** | shales, dolomites, sandstones, clays, salts, and limestones. |
| 25000~40000 | IADC5**, IADC6** | sandstones with quartz binder, dolomites, quartzite shales, magma and metamorphic coarse-grained rocks |
| More than 40000 | IADC7**, IADC8** | hard silica limestones, quartzite streaks, pyrite ores, hematite ores, magnetite ores, chromium ores, phosphorite ores, and granites |
