tapered button bit for drilling and blasting in mining

Main Features of Tapered Button Bit

• High-Quality Materials: Made with a 45CrNiMo body and embedded tungsten carbide buttons, these bits can withstand high forces, temperatures, and abrasive environments, ensuring durability.
• Forged Construction: Robust structure suitable for heavy-duty applications.
• Zinc-Coated Skirt: The skirt of the tapered button bit is finely zinc-coated, significantly increasing friction between the bit and the drill rod, enabling more efficient power transfer and better drilling performance.
• Manufacturing Process: The button bit is manufactured through a heat treatment process, allowing it to endure harsh rock drilling demands and deliver more efficient impact energy into the rock, minimizing energy loss.
• Professional Manufacturer: Over 60 years of experience in tool production.

Technical Specifications of Tapered Button Bit

• Bit Diameter: Available in 30mm, 32mm, 35mm, 38mm, 40mm, 41mm, and 42mm
• Edge Buttons: Options include 3x9mm, 3x7mm, 5x7mm, 5x8mm, 5x9mm, 6x7mm, etc.
• Center Buttons: Options include 1x8mm, 1x9mm, 2x6mm, 2x7mm, etc.
• Tapered Hole Angle: 7 degree and 12 degree available
• Edge Button Angle: 40 degree
• Weight: Ranges from 0.3kg to 0.5kg

Usage Recommendations

1. Always wear proper personal protective equipment.
2. Regularly inspect and maintain the drill bit to ensure safety and performance.
3. Follow proper drilling procedures and techniques to prevent accidents or damage.
4. Dispose of used drill bits properly to avoid environmental hazards.
5. Consult with drilling experts to ensure safe and effective drilling operations.

FAQ (Frequently Asked Questions)

How to choose the head face shape of a tapered button bit?

1. Soft Rock Drill Bit: Suitable for non-abrasive rock with a hardness of no more than 120 MPa. Main features include a concave face design, small buttons, and high-performance carbide for enhanced wear resistance. Common button profiles are ballistic and semi-ballistic, offering more efficient cuttings removal.
2. Medium Rock Drill Bit: Suitable for medium rock formations with a hardness range of 100–175 MPa. This bit typically features a flat face, medium-sized buttons, and high-performance carbide for strong wear resistance. Available button types include semi-ballistic and parabolic. Generally, medium rock drill bits are suitable for a variety of rock types.
3. Hard Rock Drill Bit: Mainly used in abrasive hard rock formations with a hardness of 180 MPa and above. Features include a large profile face, hemispherical buttons, and high-performance carbide for excellent wear resistance.
4. Retrac Drill Bit: Suitable for broken rocks and formations with varying layers. This bit provides stronger pull-out force during reverse drilling, and the button shape can be customized according to the rock formation.

How to choose the button shape of a tapered button bit?

1. Parabolic Button: Parabolic buttons are usually used as gauge and front buttons on DTH bits. Suitable for medium abrasive and hard formations.
2. Ballistic Button: This longer button is mainly used for soft and broken rocks, providing faster drilling speed.
3. Hemispherical Button: The short hemispherical button is mainly used for extremely hard rocks to improve wear resistance. Drilling speed should be lowered to achieve faster penetration.