MH-3

Roller bit MH-3 is FIRMTECH latest and most promising design. It comes from long-time working with clients, deeply understanding the operational problem. It solves the quick welding and high torque drilling weight conflict demand at the same time.

Cominbed with the latest 3rd generation full-covered inserts. You can expect it will outperform any bit in the piling industry. 

The Most Popular One

Premium Type

4th Generation leg

Vaccum Grease Systerm

Piling Design

• 0.6 Mpa consistent pressure

• Advantages:

• No rubber component, less vulnerable to welding heat

• 20% bearing working life increase

3rd Generation Cone

Piling design 4th Generation

Shape: Flat & regular leg body with increased thickness

 Advantages:

   • Preload Working degree- easy & quick welding to cutting ring

   • High torque & drilling weight capacity

• Full Covered 3rd Generation

• Inserts Qty: Maximized 52 pcs 

• OD: 139 mm 

• Feature: Full covered insert, no blind spot

• Performance: Maximum duration & penetration rate

Perfect Inserts for Every Rock Type

Chisel

Conical

Spherical

Engineered for All Rock Conditions—Tailored Solutions for Your Unique Project

60-110MPa

* Note: only available for 3rd Generation Cone 

100-180MPa

130-280MPa

Additional Support

Select Roller Bit

Improve Tool Design

Welding Instruction

Operation Tips

Selecting the appropriate type and quality based on the geological formation is crucial for optimizing drilling efficiency

A well-designed core barrel enhances debris removal, significantly improving drilling efficiency

Correct roller bit placement and welding accuracy are vital for achieving the desired drilling results.

Proper control of drilling weight and rotating speed directly impacts penetration rates and roller bit wear

Application

CONTACT US

We are committed to tack the most challenging hard rock project. Our knowledgeable sales staff will find the right tool and solution to make your project more efficient and profitable.

Replaceable Type

BASIC

CLASSIC

LARGE

Welded Type

HOLDER TYPE

HOLDER TYPE

BOLTS TYPE

Related Products

Join us at FIRMTECH


where we combine innovation with deep industry knowledge to drive success in both HDD and foundation drilling.

P: +86 0317 2020557

M: +86 18832751035

WhatsApp: +8619833109840

Ms. Rachel G