Suzhou Energy Tool Co., Ltd.
Suzhou Energy Tool Co., Ltd.
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Tungsten Carbide Roller Cone Drill Bit
1 . Descriptions:
Tungsten Carbide Insert (TCI) bits are are used middle to hard rock formation which offers a variety of carbide inserts such as spherically shaped inserts for very hard rock or conically shaped inserts for softer rock. The number of rows of inserts is directly related to the type of application and the size of hole to be drilled. here are also open and sealed bearings available as well as three types of shirttail protection to choose from. TCI stands for Tungsten Carbide Insert.
2. Specification:
| BIT SPECIFICATIONS | |
| Diameter: | 6 1/2 inch |
| Tooth Type: | TCI Tooth |
| Bearing : | Sealed Bearing |
| API Thread API Connection: | 3-1/2 API REG |
| IACD CODE : | 537 |
| OPERATION PARAMETERS | |
| Weight (Kg): | 17 KGS |
| RPM Range (rotary): | 160-70 |
| Weight on Bit (KN): | 53-137 KN |
| Make Up Torque (KN): | 9.5-12.2 KN |
3 . Bit profile
4 . 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.