R28 38mm Ballistic Carbides Threaded Rock Drilling Button Bits for Top Hammer Tunneling Applications
R28 38mm Ballistic Carbides Threaded Rock Drilling Button Bits are engineered for top hammer rock drilling applications in tunneling and mining operations. These high-performance bits feature advanced ballistic carbide buttons for superior drilling efficiency and extended service life.
These rock drilling bits are widely used in metallurgical mines, geological exploration, water conservancy construction, electric power, transportation, tunnels, quarries, national defense stone engineering, and other industrial fields requiring high-performance drilling solutions.
| Bit Diameter | Button Configuration | Angle | Flushing Holes | Weight (kg) |
|---|---|---|---|---|
| 37mm (1 29/64") | 2×7 Front, 5×9 Gauge | 30° | 1 Front, 1 Side | 0.5 |
| 38mm (1 1/2") | 2×8 Front, 4×9 Gauge | 30° | 1 Front, 2 Side | 0.6 |
| 41mm (1 5/8") | 2×8 Front, 5×9 Gauge | 35° | 1 Front, 1 Side | 0.7 |
| 43mm (1 11/16") | 2×9 Front, 5×9 Gauge | 35° | 1 Front, 2 Side | 0.8 |
| 45mm (1 3/4") | 2×9 Front, 5×10 Gauge | 30° | 1 Front, 2 Side | 0.9 |
| Bit Diameter | Button Configuration | Angle | Flushing Holes | Weight (kg) |
|---|---|---|---|---|
| 37mm (1 29/64") | 2×7 Front, 5×9 Gauge | 30° | 1 Front, 1 Side | 0.5 |
| 38mm (1 1/2") | 2×8 Front, 4×9 Gauge | 30° | 1 Front, 2 Side | 0.6 |
| 41mm (1 5/8") | 2×8 Front, 5×9 Gauge | 35° | 1 Front, 1 Side | 0.7 |
| 43mm (1 11/16") | 2×9 Front, 5×9 Gauge | 35° | 1 Front, 2 Side | 0.8 |
| 45mm (1 3/4") | 2×9 Front, 5×10 Gauge | 30° | 1 Front, 2 Side | 0.9 |
| 48mm (1 7/8") | 3×8 Front, 6×9 Gauge | 35° | 1 Front, 3 Side | 1.0 |
Kelleg is a market-oriented enterprise integrating R&D and design, procurement, sales, and customer service. We specialize in geotechnical anchoring and provide comprehensive solutions including system design, product supply, and technical support.
- Our sales team will respond to your question within 24 hours (holidays excluded)
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- Free replacement will be provided once the failure is confirmed caused by our product quality
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