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Litian Heavy Industry Machinery Co., Ltd
Litian Heavy Industry Machinery Co., Ltd

Rock Drilling Bits Classification

Today, modern rock drilling and blasting technologies and geotechnical excavation operations have become the main method of obtaining resources from rock and opening up underground space for survival and development. Therefore, long-term cooperation of experts in rock drilling, blasting, rock crushing, mining, materials, metallurgy, steel and machinery is needed. The development of long-life rock drill bits has become a major engineering technology problem that must be solved in the global mining industry in the new century in order to handle rocks efficiently and at low cost.

The mining industry is one of the basic industries of the national economy. In order to improve the economy and habitat, we need to extract more resources, expand a wider living space, build easier roads, and construct more energy and defense bases. Mining rock drill bits are indispensable tools in mining and infrastructure construction. Different rock drill bit types are used in mines, railroads, highway construction, ports, power station defense projects, etc., as well as in urban construction and quarrying. In this article, you will get more about types of drill bits used in mining.


1. Rock Drill Bit Types


(1). Button Drill Bit


Button drill bit is suitable for dry and wet drilling of medium hard and hard rocks. It is mainly used in all kinds of mining, transportation, water conservancy, roadway, tunnel excavation, quarrying and rock breaking engineering of municipal construction.

threaded-button-bits.jpg

(2). Chisel Drill Bit


Chisel rock drill bit is suitable for light rock drills, drilling rock holes with a diameter of less than 50mm, and is suitable for rocks with low hardness. This bit is widely used in various mines such as coal mine, iron ore, gold mine, copper mine and lead-zinc mine, as well as tunnel excavation in railway, highway and water conservancy construction. Chisel Bit has mature technology, adopts high-quality steel and alloy, has high toughness and high wear resistance, high production efficiency and low cost.

Chisel-Drill-Bit.jpg

(3). Cross Drill bit


Cross rock drill bit is suitable for high-power rock drill, which can drill into complex rock strata such as rock cracks. It has strong radial wear resistance. The cross bit also adopts mature technology, high-quality steel and alloy, has strong radial wear resistance, maintains high production efficiency and can control the cost.

Cross-Drill-bit.jpg

(4). Three-edge Drill Bit


Three-edge rock drill bit is suitable for high-power rock drill. It has strong drilling ability and is suitable for high hardness and complex rocks. It is widely used in highway, railway, water conservancy construction tunnels, coal mine, iron mine, gold mine and other mining excavation.

Three-edge-Drill-Bit.jpg

(5). Horseshoe Drill Bit


Horseshoe rock drill bit is suitable for all kinds of steel plants, blast furnace and ladle. Its main characteristics are fast opening speed and easy to control the depth and angle of channel and iron hole. The maintenance of iron hole mud bag is simple and saves manpower.

Horseshoe Drill Bit

2. How to Choose Rock Drill Bits

When selecting the rock drill bit, it shall be selected according to the type, performance, rock hardness and toughness of the drill bit. Generally, the chisel rock drill bit shall be selected when there is no crack in the rock; Cross rock drill bit and three-edge bit can be widely used in various rocks, especially in hard and extremely hard rocks with high abrasive cracks; The button drill bit is suitable for all kinds of rocks except high abrasive rocks.


(1). When drilling, due to the cutter feeding too fast, grinding or drilling cold and hot may cause the phenomenon of bit fracture or sudden stop;


(2). When drilling, the air volume of the rock drill shall be reduced to reduce the damage to the drill bit caused by high stress of cemented carbide parts.


As one of the mature rock drilling tools manufacturers, Litian offers a wide range of threaded button bits for sale. Contact us now if you are looking for high-quality rock drill bits!