High quality top hammer rock drilling tools,which are widely use in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields .
The use of a wide range: the practice proves that the bit is suitable for carbonate rock, limestone, chalk, clay rock, siltstone, sandstone and other soft and hard (9- grade drillability of rock, hard rock drilling), compared with normal bit, especially drilling in 6-8 grade rock the effect is particularly significant.
Features：
1.The longer life of the drill: the alloy material, with longer using life which better than the similar products.
2.High Drilling Efficiency: the drill buttons is wear-resistant, so that the drill can always keep sharp, thus greatly improving the speed of the drilling.
3.The drilling speed is stable: the bit is scraped and cut to break the rock.
4.Good Performance: the has strong wear resistance, good diameter protection and can make
the cutting teeth be used efficiently.
Diameter: 76mm, 89mm, 102mm
Skirt body: retrac, and normal, straightrac
Face design: flat, uniface, Drop Center
Carbide design: Dome, ballistic, semi-ballistic
Used in bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer.
| R28 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 38 | 1 1/2" | 0.5 |
| 41 | 1 5/8" | 0.6 | |
| 43 | 1 11/16" | 0.7 | |
| 45 | 1 3/4" | 0.7 | |
 | 38 | 1 1/2" | 0.5 |
| 41 | 1 5/8" | 0.6 | |
| 43 | 1 11/16" | 0.7 | |
| 45 | 1 3/4" | 0.7 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | R28 | 39 | 1 1/2" | 150 | 6" | 0.9 |
 | R32/R28 | 45 | 1 3/4" | 170 | 6 11/16" | 1.3 |
| R32 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 45 | 1 3/4" | 0.8 |
| 48 | 1 7/8" | 0.9 | |
| 51 | 2" | 1.0 | |
| 57 | 2 1/4" | 1.2 | |
| 64 | 2 1/2" | 1.5 | |
 | 41 | 1 5/8" | 0.6 |
| 45 | 1 3/4" | 0.7 | |
| 48 | 1 7/8" | 0.9 | |
| 51 | 2" | 1.0 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | R32 | 45 | 1 3/4" | 160 | 6" 1/4" | 1.0 |
 | R38/R32 | 54 | 2 1/8" | 180 | 7 9/64" | 1.1 |
| R38 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 64 | 2 1/2" | 1.7 |
| 70 | 2 3/4" | 1.9 | |
| 76 | 3" | 2.5 | |
| 89 | 3 1/2" | 3.7 | |
 | 64 | 2 1/2" | 1.7 |
| 70 | 2 3/4" | 1.9 | |
| 76 | 3" | 2.5 | |
| 89 | 3 1/2" | 3.7 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | R38 T38/R38 | 54 | 2 1/8" | 190 | 7 1/12" | 1.8 |
| T38 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 64 | 2 1/2" | 1.7 |
| 76 | 3" | 2.5 | |
| 89 | 3 1/2" | 3.7 | |
| 102 | 4" | 4.6 | |
 | 64 | 2 1/2" | 1.7 |
| 76 | 3" | 1.9 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | T38 | 54 | 2 1/8" | 190 | 7 1/12" | 1.8 |
 | T45/T38 | 63 | 2 31/64" | 195 | 7 11/16" | 2.8 |
| T45 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 76 | 3" | 2.2 |
| 89 | 3 1/2" | 3.7 | |
| 102 | 4" | 4.4 | |
| 115 | 4 1/2" | 6.3 | |
| 76 | 3" | 1.9 | |
| 89 | 3" 1/2" | 3.7 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | T45 | 63 | 2 1/2" | 210 | 8 1/4" | 2.9 |
| 66 | 2 19/32" | 210 | 8 1/4" | 3.2 | ||
 | T51/T45 | 72 | 2 27/32" | 218 | 8 19/32" | 4.4 |
| 51 | Diameter | Weight (kg) | |
| mm | inch | ||
 | 89 | 3 1/2" | 3.8 |
| 102 | 4" | 5.2 | |
| 115 | 4 1/2" | 6.7 | |
| 127 | 5" | 8.0 | |
| Coupling sleeve | Specification | D | L | Weight (kg) | ||
| mm | inch | mm | inch | |||
 | T51 | 76 | 3" | 225 | 8 7/8" | 4.7 |
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