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- MH-3C
Replaceable Type Roller Bit
MH-3C
Quick Replacement
MH-3C series is designed for contractors requiring flexibility and convenience in bored piling operations. It utilizes a dual assurance design combining mechanical bolt connections with welding, ensuring the reliability of connections while allowing for the onsite replacement of roller bits. The roller bits is derived from the advanced FIRMTECH Pro model MH-3, inheriting its advantages and further featuring convenient replacement and precise welding positioning capabilities.
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
• Base slot with dual-bolt connection
• Threaded Rollers: Ensures stable connection strength over time
• Durability: Maintains high strength, resisting wear and tear
• Easy Maintenance: Reduced contact area for easier roller replacement
Holder
• Spec.125mm*80mm*120mm
• Seamlessly integrated and precisely machined for optimal fit.
• 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
Spec.
MH-3C
Current spec. similar to 8.5″, we also have 12.5″ roller cutter, which could customize as per request
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
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.