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Premium Type
MH-3
The Most Popular One
Roller bit MH-3 is DRILLNOVA 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.
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
4th Generation leg
• 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
3rd Generation Cone
• Piling Design
• 0.6 Mpa consistent pressure
• Advantages:
• No rubber component, less vulnerable to welding heat
• 20% bearing working life increase
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
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
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
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
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
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
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
Roller Bit Type: MH-3H Conical
Rock socketing length 1.5D
Drilling rig: Bauer BG30
Penetrating rate: 0.4m/h
Pile length 32m