Beijing Ocean Renda Petroleum Equipment Co., Ltd.
Beijing Ocean Renda Petroleum Equipment Co., Ltd.
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API Certification Tri cone Rock oilfield drill bits used in Mining
This series of bits is mainly used in mining drilling and coal mine vent drilling.
● This series of bits is tri-cone rock bit for mining with insert teeth, air cooling and cleaning system, and roller sealing bearing.
● This series has adopted convex roller, steel ball, second thrust bearing, roller, first thrust bearing, and anti-attrition alloy is applied on it.
● This series has the merit of high boring hole efficiency and reliable working. It is widely used in metal and nonmetal mining exploitation.
Formation
| Bit Type | Drilling Weight (KN/mm) |
Rotary Speed (r/m) |
|
| Very hard with hard abrasive | KX84 | 700-1500 | 80-50 |
| Hard with hard abrasive or semi-adrasive | KX74 | 600-1200 | 80-50 |
| Hard with hard abrasive or semi-adrasive | KX73 | 600-1200 | 80-50 |
| Medium hard with high compeissive steength | KX64 | 500-900 | 100-60 |
| Medium hard with low compeissive steength | KX54 | 400-850 | 120-80 |
| Type | IADC | Bit Size |
Std.API pin Shank Size (inches) |
Approximate weight of bits (Kg) |
|
| Inches | mm | ||||
| KX74-150 | 742 | 5 7/8 | 15 | 3 1/2REG | 26 |
| KX54-159 | 542 | 6 1/4 | 159 | 2 3/8REG | 30 |
| KX74-200 | 742 | 7 7/8 | 200 | 2 3/8REG | 51 |
| KX54-250 | 542 | 9 7/8 | 250 | 3 1/2REG | 64 |
| KX545A-250 | 545 | 9 7/8 | 250 | 3 1/2REG | 64 |
| KX635B-250 | 635 | 9 7/8 | 250 | 3 1/2REG | 65 |
| KX645-250 | 645 | 9 7/8 | 250 | 3 1/2REG | 64 |
| KX74-250 | 742 | 9 7/8 | 250 | 4 1/2REG | 65 |
| KX84-250 | 842 | 9 7/8 | 250 | 4 1/2REG | 65 |
| KX845A-250 | 845 | 9 7/8 | 250 | 4 1/2REG | 65 |
| KX84A-250 | 842 | 9 7/8 | 250 | 4 1/2REG | 65 |
| KX64D-250 | 642 | 9 7/8 | 250 | 4 1/2REG | 65 |
| KX73A-310 | 732 | 12 1/4 | 310 | 4 1/2REG | 98 |