219mm MRS Concentric Under Reaming DTH Drill Bit System with 80-1650kg Weight Range for Construction Drilling
Price:
999-99999USD/PC
MOQ:
1PC
Delivery Time:
3-5WEEKS
Brand:
MING
Product Description
219mm MRS Concentric Under Reaming DTH Drill Bit System
System Overview
The MRS overburden drilling system is engineered for cost-effective simultaneous casing advancement in construction applications. This innovative system features retractable wings that deploy through forward rotation and retract via reverse rotation.
Product Specifications
Standard Casing Configuration
Casing Pipe OD: 219mm
Available Component Sets
- Pilot bit + 3 wiggle wings + casing shoe
- Pilot bit + 4 wiggle wings + casing shoe
Technical Specifications Table
| Model | Hole Dia. (mm) | Weight (KG) | Closed Dia (mm) | Pilot Dia (mm) | Total Length (mm) | Case Dia (OD*ID) | Spline |
|---|---|---|---|---|---|---|---|
| MK-MRS190 | 238 | 80 | 190 | 203 | 550 | 219*206 | DHD360,QL6,SD6 |
| MK-MRS215 | 276 | 100 | 215 | 236 | 590 | 254*240 | DHD380,QL8,SD8 |
| MK-MRS235 | 293 | 110 | 236 | 251 | 590 | 273*254 | DHD380,QL8,SD8 |
| MK-MRS240 | 293 | 115 | 241 | 256 | 590 | 273*260 | DHD380,QL8,SD8 |
| MK-MRS280 | 345 | 180 | 280 | 300 | 740 | 323*302 | SD10 |
| MK-MRS315 | 373 | 240 | 315 | 336 | 1050 | 356*337 | N120 |
| MK-MRS365 | 432 | 350 | 365 | 381 | 1100 | 406*387 | N120,N125 |
| MK-MRS410 | 478 | 460 | 412 | 430 | 1100 | 457*435 | N125 |
| MK-MRS460 | 530 | 585 | 460 | 475 | 1100 | 508*483 | N125,SD18 |
| MK-MRS510 | 580 | 860 | 509 | 527 | 1180 | 559*533 | N180,SD18 |
| MK-MRS560 | 635 | 910 | 560 | 581 | 1180 | 610*584 | N180,SD18 |
| MK-MRS610 | 695 | 1100 | 600 | 630 | 1200 | 660*632 | N240 |
| MK-MRS660 | 735 | 1200 | 656 | 681 | 1207 | 711*685 | N240 |
| MK-MRS710 | 785 | 1480 | 710 | 730 | 1207 | 762*736 | N240 |
| MK-MRS745 | 838 | 1650 | 745 | 776 | 1207 | 813*780 | N240 |
Ordering Information
To place an order, please provide the following specifications:
- Casing Tube OD & ID
- Reamer Bit Diameter
- Minimal Casing Shoe ID
- Hammer Shank Style
Performance Advantages
- Enhanced penetration rates and superior perpendicularity
- Reduced torque requirements for improved operational efficiency
- Minimal environmental impact during drilling operations
Product Images
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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