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Exploring the Right Types of Drill Bits for Rock Drilling

HomeBlogExploring the Right Types of Drill Bits ...

Are you still worried about choosing drill bits for rock drilling? OK, our professional rock drilling service providers at SUPERDRILL can provide you with answers to help you find the right drill bit for your mining and engineering applications.

Types of Drill Bits for Rock Drilling

When it comes to rock drilling, the choice of drill bits plays a crucial role in determining the success and efficiency of the operation. Different rock formations and geological conditions demand specific types of drill bits to ensure accurate and effective drilling.

  1. 1.Taper button bits:


    • The main application is drilling small holes. The drilling range we provide is 20-60mm, which can be used with Tapered drill rods.The Rock drills used are small pneumatic rock drills (such as YT27, YT29A, etc.), small hydraulic rock drills, and gasoline-powered rock drills (such as YN27C, etc.) ). The drilling depth in question is less than 10 meters.
    • taper button bit

  2. 2.Taper Cross Bits（X bit):

    • The cross drill bit is also an alloy drill bit. It is mainly used in rocks with relatively high hardness. It is also a pneumatic drill bit. Common drilling diameters are 32/34/36/38/42/45/48/50/55/60mm, etc. Used with B22/B25 drill pipe. Cross drill bits are used in coal fields, tunnels, metallurgy, geology, water conservancy, construction, and energy. Mainly used for drilling blast holes.
    • taper cross bits

  3. 3.Chisel Bits:

    • Chisel bit (taper chisel bits) is a drill bit with a piece of carbide inlaid on the head. There are many different design models to adapt to different operating environments. Tapered hole drill bits with various tapers (4.6.7.11°12°) are connected to the tapered drill bit (finished drill bit) through the tapered hole. It is also mainly used with pneumatic rock drills and small hydraulic rock drills. It is widely used in depths ≤5m and drilling diameters between 20-65mm. Different types of alloys are used for different rocks, and YK05 alloy is commonly used. Products are widely used in mining, coal mining, iron ore, copper mines, gold mines, roadways, tunnels, quarries, gypsum mines, transportation, water conservancy, and civil explosion projects.
    • Taper Chisel Bits

4.Thread button bit:

  • Thread Button bits are different from taper button bits in the way they are connected. They use threaded connections, which are stronger than tapered connections. Types of threaded drill bits include: R25, R28, R32, R35, R38, T38, T45, T51, ST58, ST60, GT60; drill bit diameter range: 33mm ~ 152mm. Can be used for deep hole rock drilling. It is better to use it with hydraulic rock drill. Mainly used in: Drifting and Tunneling, mining.

5.Drag Bits:

  • Drag Bits have a wide range of uses. They are mainly used in water well drilling. Drag Bits have a wide drilling range and can drill holes of 50-450mm. Drag Bits can be inlaid with carbide or PDC. Drag Bits can choose how many wings to use according to the hardness of the rock, such as 3 wings/4 wings/5 wings/6 wings. 3 wings are used for relatively soft rocks, 4 wings are used for medium hard rocks, etc.

6.PDC drill bits (Polycrystalline Diamond bits):

  • PDC drill bits are mainly used in geological survey and exploration, and can also be used in oil exploration, etc. It is suitable for rock - hard rock, its drilling pressure is low, the drilling speed is high, and the drilling cost is low. PDC drill bits generally include coring and non-coring drill bits.PDC drill bit diameter range is relatively wide, from 3 3/4inch to 26inch.

7.DTH Bits:

  • DTH BITS (down-the-hole drill bits) are widely used in water wells, geotechnical engineering, mineral resource exploration and other fields. Down-the-hole drill bits are divided according to air pressure: low air pressure DTH BITS, medium pressure DTH bits, high air pressure DTH BITS, used with DTH hammer. The drilling range is wide, 60-600mm can be achieved.

  1. Choosing the right rock drill bit is a critical decision that depends on factors such as rock hardness, drilling application and geological conditions. If you are troubled by choosing the right drill bit for your project, you can also contact us to help choose.