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9-Tooth 45mm Diameter R28 Threaded Button Bit for High-Power Rock Drilling
Product Specifications
Diameter:
45mm
Body Length:
95mm
Thread:
R28
Carbide Brand & Grade:
ZCC/YK05/YG9C/YG10C
Steel Grade:
45CrNiMoVA, 42CrMo
Weight:
0.67 kg
Product Overview
Our 9-tooth, 45mm diameter R28 threaded button drill bit is engineered for high-intensity drilling in hard rock formations including granite, gneiss, and mineral-bearing rocks. Combining a robust R28 threaded connection with optimized tooth layout and durable construction, this bit delivers superior drilling speed, hole accuracy, and extended service life for large-scale mining, quarrying, blasting, and deep foundation drilling applications.
Key Features & Benefits
Optimized 9-Tooth Design: Features nine tungsten carbide teeth arranged in an alternating pattern that prevents overlapping during drilling and ensures even impact force distribution. This design reduces friction-generated heat and increases drilling speed by 20-25% compared to 6- or 7-tooth bits of the same diameter, maintaining efficiency in extremely abrasive and hard rock formations.
R28 Threaded Interface: Industry-standard R28 threaded connection provides secure attachment to R28 drill rods and connectors, effectively preventing thread slippage or breakage during high-torque drilling operations.
Balanced 95mm Length: The short to medium-length drill body design strikes the perfect balance between rigidity and drilling depth, minimizing vibration during high-speed rotation to improve operational efficiency.
Heavy-Duty Construction: Durable design suitable for harsh working conditions with wear-resistant tungsten carbide buttons (YG10C material with density ≥14.8 g/cm³, hardness HRA ≥89) that prevent chipping under repeated high impact loads. The alloy steel body undergoes quenching and tempering heat treatment for enhanced tensile strength (≥1200 MPa) and fatigue resistance.
Product Images
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HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...
