FIRMTECH > Product > Foundation tools > Roller Bit > MH-3H

WELDING ROLLER BIT—MH-3H

The MH-3H is a high-performance drill bit launched by FIRMTECH, specially designed for basic engineering. Its distinguishing feature is its large-size design, ensuring excellent cutting capabilities and stability in various geological conditions.

Cone

  • The MH-3H model uses the third generation cone design.
  • The cone is equipped with 74 carbide teeth (inserts).
  • The insert spec is 17*74
  • The diameter of the cone with teeth is 191mm
  • The random layout design of the cone ensures no blind spot drilling, improves drilling speed and working life
  • All bearings are covered with carbide to provide additional hardness and durability to adapt to various rock types.

Body

  • MH-3H adopts the fourth generation body design.
  • The flat automatic angle body design is adopted to facilitate quick fixing and replacement. This design solves the conflicting needs of fast welding and can be suitable for easy welding and replacement of rollers on-site or in the workshop.
  • The body adopts a vacuum grease injection system to ensure that the bearing has sufficient lubrication throughout its service life.
  • In addition to traditional seals, additional CNC surface treatment is applied as an additional seal to prevent dust from entering the bearing.

Onsite Application

1. Deep foundation construction: MH-3H can effectively drill into hard rock formations and is suitable for deep foundation construction of high-rise buildings, bridges and other large infrastructure projects. Its durability allows it to operate efficiently in holes up to 24 meters deep and beyond.

2. Complex geological conditions: In hard rock formations where picks are not suitable, the MH-3H roller bit is used in conjunction with the core barrel to effectively break through the hard rock formations and ensure drilling quality and efficiency.

3. High efficiency: large size design and optimized material combination provide excellent cutting efficiency, reducing construction time and cost.

4. Large diameter drilling: The MH-3H roller bit can be used in cutting ring  for projects that require large diameter drilling, such as underground continuous wall construction or large pile foundation projects.

Other Model Options

MH-1
MH-2
MH-3
MH-3R
MH-3C
MH-3B

Roller Bit Data

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CANGZHOU FIRMTECH DRILLING EQUIPMENT CO., LTD.

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