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7 Degree Tapered Drill Rod H22 Hexagon Rock Drilling Tool Mining Jack Hammer Taper Drill Rod
Prodcut information:
Also named taper rod, tapered drill steels etc.This provides a hexagonal shank section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain the proper shank striking face position in the rock drill, and a tapered bit end. Tapered rod lengths available from 0.6m to 3.6m in length(Are measured from the collar to the bit end).
Tapered drill rod Advantage:
1. Through-hardened and heat-treatment shank end for high wear resistance and a longer service life
2. Stainless steel flusing tube lining to prevent corrosion and breakage
3. Super tough 23CrNi3MoA, 40SiMnCrNiMo or 55SiMnMo steel, specially designed for wet or dry drilling.
4. Special anti-corrosion oil to protect the flushing hole of the rod.
| Drill Rod | Length(mm) with shank | Foot | Weight approx(kg) | Taper | shank |
| Tapered Drill Rod | 1320mm | 4'' | 4.4 | 7,11,12 degree | 108mm |
| Tapered Drill Rod | 1632mm | 5'' | 5.4 | 7,11,12 degree | 108mm |
| Tapered Drill Rod | 1936mm | 6'' | 6.4 | 7,11,12 degree | 108mm |
| Tapered Drill Rod | 2546mm | 8'' | 8.4 | 7,11,12 degree | 108mm |
| Taper Rods Grades Recommended Table | ||
| Grades | Types | Recommended conditions |
| Superior | G III, T III, | 1) Rock drills impact energy: ≥76J, typically model: YT28 |
| 2) Drilling depth: ≥ 2.5 m (8’ 2 27/64”) | ||
| 3) Rock formations: very hard, hard, medium hard and soft rock | ||
| Protodyakonov Hardness Scale: f ≥ 15 | ||
| Uniaxial Compressive Strength: ≥150 Mpa | ||
| 4) Replacements: G rod, G I rod, ROK | ||
| Normal | G I, ROK | 1) Rock drills impact energy: < 76 J, typically model: YT24 |
| 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) | ||
| 3) Rock formations: Medium hard and soft rock | ||
| Protodyakonov Hardness Scale: f <15 | ||
| Uniaxial Compressive Strength: <150 Mpa | ||
| 4) Replacements: G rod | ||
| Economy | G | 1) Rock drills impact energy: < 76 J, typically model: YT24 |
| 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) | ||
| 3) Rock formations: Medium hard and soft rock | ||
| Protodyakonov Hardness Scale: f <10 | ||
| Uniaxial Compressive Strength: <100 Mpa | ||
