Hunan Tianying Drilling Machine Manufacturing Co., Ltd. |
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Antiwear High Efficient Roller Cone Drill Bits Fast Drilling Rate
Long Bearing Life
Click here for catalogueTCI DRILL BIT.pdf
IADC7** Series Apply For Hard to Very-Hard Formation
For use in moderately abrasive consolidated formations with compressive strength ranging between 140 – 485 Mpa such as hard limestone, quartzite, granodiorite, and medium grade metamorphic formations
Cutting structure: These bits are characterized by closely spaced conical or spherical inserts with medium to low projection. This configuration promotes good penetration rates in hard, consolidated and very abrasive formations. Smaller carbide inserts are provided on the gage and inner rows or hard metal is deposited in the nose area to contain shell erosion and improve performance.
CUTTING SELECTION GUIDE
MPa | 0 | 70 | 140 | 210 | 276 | 345 | 411 | 485 | 552 | 620 | 690 |
Ksi | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
IADC435 | √ | √ | |||||||||
IADC535 | √ | √ | √ | √ | |||||||
IADC545 | √ | √ | √ | √ | |||||||
IADC635 | √ | √ | √ | √ | |||||||
IADC645 | √ | √ | √ | √ | |||||||
IADC725 | √ | √ | √ | √ | |||||||
IADC735 | √ | √ | √ | √ | |||||||
IADC745 | √ | √ | √ | √ | |||||||
IADC835 | √ | √ | √ |
Advantage:
The above represents commonly available sizes and types, we do produce other sizes and types of rock drill bits which do not appear on . Please contact us for more information.