A hammer core bit is an essential tool in drilling operations, used primarily for obtaining core samples from hard materials like rock, concrete, or masonry. These core bits consist of a cylindrical body fitted with a sharp starter point at the tip, which enables precise drilling into the material. The core body is designed to capture a core sample, which is essentially a cylindrical chunk of the material being drilled.

The starter point on the core bit ensures a stable and accurate start to the drilling process by focusing the impact of the hammer on a small area, helping the bit penetrate tough surfaces. Once the drilling begins, the body of the core bit continues the process of removing material to create a hole and extract the core sample. The combination of the starter point and the core body makes it possible to carry out efficient and precise drilling for geological, mining, or construction purposes.

• Design:The core bit body is typically cylindrical, designed to drill through hard materials and create a cylindrical hole that captures a core sample. The body is often reinforced with cutting elements such as tungsten carbide segments or teeth. Core bits typically feature a threaded design at one end, allowing for attachment to a drill rig or rotary hammer. The opposite end is where the core sample is ejected, often featuring a retrieval mechanism. The body often includes segments or teeth around its perimeter, which help cut through the material. These segments may be made of materials like tungsten carbide for superior wear resistance. The starter point is the sharp, pointed tip at the end of the core bit. This part is designed to penetrate the surface with minimal deflection, ensuring that the core bit starts drilling accurately and precisely.
• Applications:
  • Geotechnical Drilling: Core bits with starter points are widely used in geotechnical drilling to extract core samples from rock, soil, or concrete for analysis. This helps engineers and geologists determine material properties, structural integrity, and the suitability of the ground for construction.
  • Exploration Drilling: In mining and mineral exploration, core bits are used to obtain core samples of rock and ore. The starter point ensures that drilling begins accurately, allowing for the extraction of high-quality samples to assess the presence of valuable minerals.
  • Foundation Drilling and Piling: Core bits with starter points are used to create holes for deep foundations, pilings, and anchor bolts in concrete, rock, or soil. The precise drilling enabled by the starter point ensures the correct placement of foundations in construction projects.
  • Concrete and Asphalt Coring: In construction and demolition, these core bits are used to cut through concrete and asphalt to extract core samples for testing or to create openings for pipes, cables, or other installations.
  • Environmental Drilling: Core bits are used in environmental drilling to retrieve samples of soil, groundwater, and other materials for analysis. The starter point ensures that the drilling process begins with minimal contamination and accurate core extraction.
  • Repair and Renovation: In renovation projects, core bits with starter points can be used to drill precise holes for reinforcing steel, anchor bolts, or to create openings in structures for inspections or repairs.
• Materials:Tungsten carbide is commonly used for the cutting segments around the core bit and the starter point due to its hardness, wear resistance, and ability to withstand the extreme forces and temperatures generated during drilling operations. It ensures that the core bit remains sharp and effective over time, even when drilling through tough surfaces like rock or concrete. High-speed steel is often used for the body of the core bit, as it is resistant to wear and can retain its hardness even at high temperatures. HSS is ideal for drilling operations that require the core bit to remain effective over extended periods.
• Configurations:1-3/4″ to 5″ diameter