Roller Cone Drill Bit 12-1/2 Inch TCI Tricone Drill Bit
Specification:
| BIT SPECIFICATIONS | |
| Diameter: | 12-1/2 ” |
| Body Type : | Steel Body |
| Tooth Type: | TCI Tooth |
| Bearing : | Sealed Rearing |
| Thread Connection: | 6-5/8 API REG |
| IACD CODE : | 745 |
| OPERATION PARAMETERS | |
| Weight | 105 KGS |
| Flow Rate | 80-220 |
| RPM Range | 130-40 |
| Weight on Bit | 152-300kN |
| Make Up Torque | 52 - 57KN |
Bit profile
Bearing Types
There are primarily three types of bearing designs used in tricone drilling bits:
• STANDARD OPEN BEARING ROLLER BIT:
On these bits the cones will spin freely. This type of bit has a front row of ball bearings and a back row of roller bearings.
• SEALED BEARING ROLLERS BITS
These bits have an O-Ring seal with a grease reservoir for bearing cooling. The seals acts as a barrier against mud and cuttings to protect the bearings
• JOURNAL BEARING ROLLER BITS
These bits are strictly oil/grease cooled with nose bearings, O-Ring seal and a race for maximum performance.
What we should be pay attention on choosing the tricone drill bit ?
- IADC code passport
- TCI & Steel tooth options
- Additional tungsten carbide inserts on heel rows
- Tungsten carbide coating on cone bodies
- Diamond coated tungsten carbide inserts on the gauge of the cones
- Tungsten carbide inserts on the shirttail of the legs
- Additional central nozzle for cleaning cones
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