Which roller bit is right for you?

A full range of rotary drill bits for different piling applications. View the differences below or contact us for professional advice.
Ask Quotation
FIRMTECH > Product > Foundation tools > Roller Bit > Roller Bit Data
MH-1 PRO
MH-2
MH-3
MH-3H
MH-3R
MH-3B
MH-3C

            Size：                          8-1/2″

Cone：3RD GENERATION

Body：3RD GENERATION

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       134 mm

  Connection： Welding

  Bearing & Seal：Journal Bearing, Rubber Seal

           Size：                         8-1/2″

Cone：3RD GENERATION

Body：1ST GENERATION

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       139 mm

  Connection： Welding

  Bearing & Seal：Journal Bearing, Rubber Seal

            Size：                          8-1/2″

Cone：3RD GENERATION

Body：4TH GENERATION

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       139 mm

  Connection： Welding

  Bearing & Seal：Journal Bearing, Rubber Seal

             Size：                       12-1/4″

Cone：3RD GENERATION

Body：4TH GENERATION

     Insert Counts：  74

       Insert Size：       17 mm

        Cone Size：       191 mm

  Connection： Welding

  Bearing & Seal：Journal Bearing, Rubber Seal

           Size：             8-1/2″&12-1/4″

Cone：3RD GENERATION

         Body：           Holder type

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       139 mm

  Connection： Holder type for quick replacement

  Bearing & Seal：Journal Bearing, Rubber Seal

           Size：              8-1/2″&12-1/4″

Cone：3RD GENERATION

           Body：            Bolt type

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       139 mm

      Connection：       Bolt type for quick replacement

  Bearing & Seal：Journal Bearing, Rubber Seal

           Size：              8-1/2″&12-1/4″

Cone：3RD GENERATION

        Body：        Holder type

     Insert Counts：  52

       Insert Size：       14 mm

        Cone Size：       139 mm

  Connection： Holder type for quick replacement

  Bearing & Seal：Journal Bearing, Rubber Seal

               Update For Cone

   1ST GENERATION 

  • Tricone bit design
  • Inserts Qty: 37 Inserts
  • OD: 116mm in diameter
  • Feature: Non-cutting bling grooves
  • Performance: Low duration & penetration rate

                         2ND GENERATION

  • Piling Design
  • Inserts Qty: 47 Inserts
  • OD: 118mm OD in diameter
  • Feature: No grooves, small blind spot 
  • Performance: Medium duration & penetration rate

                          3RD GENERATION

  • Piling Design
  • Insert Qty: 52 Inserts
  • OD: 120mm in diameter
  • Feature: Full covered insert, no blind spot
  • Performance: Maximum duration & penetration rates

               Update For Body

             1ST GENERATION 

  • Tricone bit Design
  • Shape: Irregular 120-degree segment with nozzle structure
  • Challenges:

    •Difficult positioning and welding due to irregular shape

    •Risk of heat damage when cutting the nozzle

             2ND GENERATION

  • Piling Design

  • Shape: Flat & regular leg body

  • Advantages                     •Easy & quick welding to cutting ring

  • Challenges:             •Reduced strength due to thin body structure

                             

             3RD GENERATION 

  • Tricone bit Design
  • Shape: Flat & regular leg body with increased thickness
  • Advantages:

    •Easy & quick welding to cutting ring.

    •High torque & drilling weight capacity

  • Challenges:                       •Easy & quick welding to cutting ring.

          4TH GENERATION

  • Piling Design
  • Automative angle
    preload working degree
  • Shape: Flat & regular leg body with increased thickness

  • Advantages                   •Easy & quick welding to cutting ring.                               •High torque & drilling weight capacity

  • Challenges               •Welding angle control

CANGZHOU FIRMTECH DRILLING EQUIPMENT CO., LTD.

We are a strong believer that consistent focusing to the fundamental clients problem and interest.

Company

Product

Connect

Linkedin Instagram Youtube Tiktok