Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
12-1/4'' IADC642 Tricone Bit for coal mining
- Diameter: 311mm
- Diameter:12 1/4"
- IADC No.: 642
- Pin Type Dimensions: 6 5/8" API
- Bearing type : Air Cooled Bearing
- Circulation Type : Jet Air
- Usag : Mining
ProDrill offers a full line of tricone and bicone bits. Tricone drill bits are available in new and used (re-tip and re-run) steel tooth and tungsten carbide insert, size from 3 3/8"(85.7mm) to 26"(660.4mm) for use in all formations, with any bearing/seal type, and a wide range of additional custom features.
| 12-1/4'' IADC642 Tricone Bit Technical parameter table | |
| Bit Diameter | 12 1/4 INCH=311 mm |
| IADC CODE | IADC6-4-2 |
| Bearing Type | Open Bearing |
| Circulation Type | Jet Air |
| Cutting Structure | Inner and Nose rows:Ogive |
| Gauge rows: Ovoid | |
| Heel rows | |
| Shirttail Protection | Hard metal on lug |
| Wear resistant carbide on shirttail lip and lug | |
| Pin Connection | 6 5/8" API REG |
| Net Weight/Gross Weight | 95 KG/100 KG |
| Package Size | 36*36*51CM |
| Weight on Bit (lb/in) | 20T/44093 Lbs MAX |
| RPM (r/min) | 120--70 r/min |
| Air Back Pressure | 29-58 psi / 0.2-0.4 Mpa |
| Cumulative drilling distance of single drill(rock grade f15-f20) | Not less than 1000 meters |
| Suitable Formation | Designed for high compressive strength,hardand abrasive formations,such as magnetitequartzite, granite,limestone,sandy,sandstone,dolomite, chert,etc. |
| Note:The upper limits of WOB and RPM in above table should not be used simultaneously | |
Tricone drill bits include Steel Tooth (or milled tooth) bits and Tungsten Carbide Insert (TCI) bits, TCI bits are much more durable than Steel Tooth bits, but with a higher cost to manufacture. Both types of Tricone Bits are available with
(1) Open Bearing or Sealed Bearing
(2) Roller Bearing or Friction Bearing (Journal Bearing)
(3) Gage Protected or Non-Gage Protected, etc.
ProDrill offers heavy duty tricone bits to meet your customized drilling needs. We have classified the bits based on their diameter (footprint), american petroleum industry number (API Number) and international association of drilling contractor number (IADC number). The IADC number further classifies the tricone bits based on the tooth material of construction, suitability for drilling into soft, medium or hard rock and bearing type used. All possible combinations of IADC number for tricone bits are available at ProDrill.
