195mm NMK5E Concentric Overburden Casing Drilling Bit with 3 Middle Wings for DHD340 Hammer
Price:
999-99999USD/PC
MOQ:
1PC
Delivery Time:
3-5WEEKS
Brand:
MING
Product Description
Product Overview
The 195mm NMK5E Concentric Overburden Casing Drilling Bit is engineered for challenging drilling conditions in soft, loose ground with scattered boulders. This specialized tool enables simultaneous drilling and casing installation, preventing soil collapse and maintaining drilling efficiency.
Key Features & Benefits
- 3 middle wings design for enhanced stability and performance
- Compatible with Hammer DHD340 for optimal drilling power
- 195mm reaming diameter with precise casing integration
- Prevents soil collapse during drilling operations
- Enables smooth transition to conventional DTH bits when bedrock is reached
- High-quality construction ensures durability and reliability
Technical Specifications
| Model | Reaming Diameter (mm) | Casing Diameter (mm) | Equipped Hammer |
|---|---|---|---|
| NMK5E108 | 115 | 93-99 | 90 |
| NMK5E127 | 130 | 115-117 | 110 |
| NMK5E146 | 155 | 130-134 | 110/340 |
| NMK5E168 | 185 | 148-156 | 110/340 |
| NMK5E178 | 195 | 158-166 | 150/340 |
| NMK5E183 | 196 | 168-176 | 350/360 |
| NMK5E193 | 206 | 176-182 | 360 |
| NMK5E219 | 236 | 199-207 | 360 |
Ordering Information
Custom orders require: Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style. Additional MRS system sizes available upon request.
Frequently Asked Questions
What is overburden groundwater?
Overburden groundwater refers to water found below ground surface within unconsolidated material overlying bedrock aquifers.
What is the difference between well water and groundwater?
Well water typically has higher mineral content than surface water, as it filters through rock and soil layers that remove contaminants while absorbing minerals.
Why is percussion drilling used?
Cable percussion drilling allows casing installation to prevent soil collapse, enabling deep borehole advancement while maintaining drilling progress.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Wuhan Kingdrilling Diamond Co.,Ltd
Location
1-2-905 California Sunshine, Optical Valley Street,Wuhan 430074, China
Contact Person
Wendy Chen