integral drill steel for top-hammer drilling operations

Main Features of Integral Drill Steel

1. Integral drill steels help reduce the loss of impact energy, improve drilling speed and efficiency, and are typically used for drilling holes with diameters from 26 mm to 41 mm.
2. The integral drill steel has a fixed length structure, with a shank at one end and a bit at the other. It can drill to a depth equal to its effective length. The drill bit can be equipped with a single chisel-shaped tungsten carbide insert or three similar inserts.
3. For deep hole drilling, integral drill steels are designed to be used in series, with each subsequent rod being longer than the previous one. In order to prevent the bit from jamming, the diameter of the bit should be slightly reduced as the rod length increases.
4. Integral drill steels are manufactured from high-quality steel, such as 55SiMnMo and 95CrMo, with integrated processing and heat treatment, providing excellent fatigue resistance and durability during high-impact drilling operations.

Technical Specifications

• Shank size: hex 22 x 108 mm
• Head diameter: 26 mm to 41 mm
• Rod length: 400 mm to 7200 mm

Applications

• Dimensional stone quarrying industry
• Underground mining
• Tunneling