Replaceable Type Roller Bit

MH-3R

Quick Replacement & Anti-Loosening System

MH-3R Quick Replaceable Roller cutter is a highly versatile and precision-engineered solution, designed for a wide range of applications, including HDD Hole Openers, Micro Tunneling Heads, Auger Reamer Heads, and Bored Piling Core Barrels. Its quick-release mechanism simplifies the replacement process, allowing for fast and efficient roller bit changes when worn, significantly reducing downtime and enhancing operational efficiency.

3rd Generation Cone

• Full Covered 3rd Generation

• Inserts Qty: Maximized 52 pcs 

• OD: 139 mm 

• Feature: Full covered insert, no blind spot

• Performance: Maximum duration & penetration rate

Slot & Bolts Connection

 Slot pocket & 3 bolts design 

• Advantages:

   • Quick release mechanism for fast replacement, ensuring minimal downtime during operations

   • Secure spring lock system to prevent bolt failures during drilling, reducing operational risks. 

Holder

• Spec: 125mm*80mm*120mm

• Increased holder thickness for enhanced durability

• Advantages:

  • Minimizes the impact of welding heat on the bearing system.

   • Accurate positioning, quick replacement.

Perfect Inserts for Every Rock Type

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

Chisel

60-110MPa

Conical

100-180MPa

Spherical

130-280MPa

* Note: only available for 3rd Generation Cone

Large

12MH-3R

Standard

MH-3R

Additional Support

Select Roller Bit

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

Improve Tool Design

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

Welding Instruction

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

Operation Tips

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

Application

1200mm Roller Bit Core Barrel - Guangdong

Rock type: Grainite
Roller Bit Type: MH-3 Conical
Rock socketing length 1.5D
Drilling rig: SR405R
Penetrating rate: 0.7m/h due to part rock weathered

1800mm Roller Bit Core Barrel - Wuhe Subway Station

Rock Type: Fresh hard grainte
Roller Bit Type: MH-3 Conical
Rock socketing length: 35m+
Drilling rig: Zoomlion 550L Pile Length: 95m
Core barrel Height: 3.5m

1200mm Roller Bit Core Barrel - Chengdu

Rock type: Tuff
Roller Bit Type: MH-3R Conical
Rock socketing length 2D
Drilling rig: XR360
Penetrating rate: 0.5m/h
Pile length 38m

1200mm Roller Bit Core Barrel -Guangzhou

Rock type: Grainite Gneiss
Roller Bit Type: MH-3 Conical
Rock socketing length 2-5m
Drilling rig: XR360
Penetrating rate: 0.4m/h
Pile length 30m

1200mm Roller Bit Core Barrel - Aisa

Rock type: Grainite
Roller Bit Type: MH-3 Conical
Rock socketing length 2D
Drilling rig: Bauer BG28
Penetrating rate: 0.5m/h
Pile length 25m

2500mm Core Barrel with Roller Bit - Middle east

Rock type: Grainite
Roller Bit Type: MH-3H Conical
Rock socketing length 1.5D
Drilling rig: Bauer BG30
Penetrating rate: 0.4m/h
Pile length 32m

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.