Recycle ring bit casing drilling bit
Product details
Rock drilling tools factory KINGDRILLING professionally produce casing drilling system. Recycle ring bit casing drilling bit is one of the most popular items in the market.
Working principle:
1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit’s upper shoulder engages the shoulder of the casing shoe.
2. Hammer’s percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing.
3. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved
4. Drilling continues to the desired depth in the bedrock using a conventional drilling.
Casing drill Bits Advantages:
1. Full face head design for faster penetration and straighter hole,
2. Less torque is required.
3. It can drill in vertical, horizontal or any direction
4. Minimize disruption to the drilled hole
5. Varied ring bit diameters to suit different casing requirement
Model |
External Dia.(mm) |
Casing Dia.(OD*ID) |
Spline |
MK-MRING90 |
125 |
114*102 |
MACH33, DHD3.5 |
MK-MRING115 |
155 |
139*127 |
DHD340, SD4, QL4 |
MK-MRING140 |
188 |
168*153 |
DHD350, SD5, QL5 |
MK-MRING165 |
215 |
194*181 |
DHD360, SD6, QL6 |
MK-MRING190 |
238 |
219*206 |
DHD360, SD6, QL6 |
MK-MRING215 |
276 |
254*240 |
DHD380, SD8, QL8 |
MK-MRING235 |
293 |
273*254 |
DHD380, SD8, QL8 |
MK-MRING240 |
293 |
273*260 |
DHD380, SD8, QL8 |
MK-MRING280 |
345 |
323*303 |
SD10 |
MK-MRING315 |
375 |
355*335 |
SD10 |
MK-MRING365 |
432 |
406*387 |
N120, N125, SD12 |
MK-MRING460 |
530 |
508*483 |
N125, N180 |
MK-MRING510 |
580 |
559*533 |
N180 |
MK-MRING560 |
635 |
610*584 |
N180 |
MK-MRING610 |
695 |
660*632 |
N240 |
MK-MRING660 |
735 |
711*685 |
N240 |
MK-MRING710 |
785 |
762*736 |
N240 |
MK-MRING745 |
838 |
813*780 |
N240 |
MK-MRING810 |
886 |
864*838 |
N240, N240S |
MK-MRING860 |
935 |
914*884 |
N240S |
MK-MRING910 |
980 |
965*935 |
N240S |
MK-MRING960 |
1038 |
1016*986 |
N240S, M330 |
MK-MRING1010 |
1090 |
1067*1041 |
M330 |
Order Guide:
Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style
Our Service
1.Pre-sale service:
If demand, assist clients to get rich and generous returns on their investments.Select DTH tools model.Design and manufacture down the hole products according to client's requirement.
2.Services during the sale:
Assist clients to draft solving plans.
Pre-check and accept Rock drill products ahead of delivery .
3.After-sale services:
Our sales team will response for your question within 24 hours (Holidays Excluded)
Technical Support will be available in any time.
Free replacement can be provided once the failure confirmed caused by our product quality.
http://www.mingdthbit.com/