Concentric Casing System With Ring Bits

Concentric Casing System With Ring Bits

You will get efficient and thoughtful service from KSQ Technology.

Application Range

Applied to overburden formations with complex topographic and geological conditions, such as gravel, fissured formation, boulder, landfill of construction refuse, etc.

Drills at any angle;

Good straightness of borehole;

Maximum depth of borehole can reach 150 meters.

Structural Advantages

&#; Straightness: ensures the straightness of borehole in different topographic and geological conditions.

&#; Adaptability: ensures penetration efficiency in complex topographic and geological conditions, such as gravel and landfill of construction refuse.

&#; Lower torque: the system torque is less than eccentric casing system.

&#; Easy to unlock an re-rock: easy to re-rock after unlock.

&#; Drilling at any angle: concentric casing system can drill under horizontal, vertical and inclined conditions.

&#; Environmental: better than eccentric casing system, because of its advantages of drilling smoothly, small vibration and low noise, it is more suitable for construction in urban areas.

Component Parts

Casing Shoe  Ring Bit  Pilot Bit

Used to connect the casing tube.

Used to connect the pilot bit and casing shoe.

The major structure of concentric casing system, with buttons and flushing grooves, etc.

Related Parts List

NO

Items

Description

1

Casing Tube

a. Threaded casing tubejeft turning thread   b. Welded casing tube

2

Drill rod

Thread: API(REG/IF)/NC

3

Stabilizer

Thread of stabilizer is in keeping with drilling pipe

4

Hammer

Thread: API REG

5

Concentric Overburden Drilling System

Regard the specification forms as below

Concentric Casing System With Rings(retrievable)

 

 

         D

        

h

H

C

G

 

 

Part No.

O.D of Casing Tube (mm)

I.D of Casing

Tube (mm)

Wall thickness of Casing Tube (mm)

Max. O.D of Pilot Bit (mm)

Reamer Dia.(mm)

Max. O.D of Normal Bit (mm)

DTH Hammer

/TOP Hammer Type

Weight(Kg)

                                                                                Top Hammer Type

MDC76/7RR-01

76 62 7 57 84 39

R32

3.2

MDC89/8RR-01

89 73 858 70 96 58 T38 5.8

MDC114/10RR-01

114 94 10 92 122 80

T45

7.5

MDC127/10RR-01

127 107 10 105 136 90

T45

10

MDC140/10RR-01

140 120 10 116 148 97

T45/T51

If you want to learn more, please visit our website Concentric Drilling System.

Additional reading:
What teeth are best for excavator bucket? 15

                                                                                 DTH Hammer Type

MDC114/10RR-02

114

94 10 92 122 80

COP34/DHD3.5

10

MDC127/10RR-02

127 107 10 105 136

90

COP34/DHD3.5

16

MDC140/10RR-02

140 120 10 116 148 97

COP44/DHD340

/SD4/QL40

21

MDC146/10RR-02

146 126 10 124 154 110

COP44/DHD340

/SD4/QL40

22

MDC168/12.7RR-02

168 142.6 12.7 141 180 125

COP54/DHD350

/SD5/QL50/M50

27

MDC178/12.7RR-02

178 152.6 12.7 150 186 135

COP54/DHD350

/SD5/QL50/M50

32.5

MDC194/12.7RR-02

194 168.6 12.7 166 202 145

COP64/DHD360

/SD6/QL60/M60

42.5

MDC219/12.7RR-02

219

193.6 12.7 191 228 170

COP64/DHD360

/SD6/QL60/M60

58

MDC245/12.7RR-02

245

219.6

12.7 214 254 195

COP84/DHD380

/SD8/QL80

78

MDC254/12.7RR-02

254 228.6 12.7 224 265 203

COP84/DHD380

/SD8/QL80

84.5

MDC273/12.7RR-02

273 247.6 12.7 241 286 223

COP84/DHD380

/SD8/QL80
 

100

MDC325/12.7RR-02

325 299.6 12.7 292 338 276

COP84/DHD380

/SD8/QL80

135

MDC406/12.7RR-02

406 380.6 12.7 377 420 350

QL120/DHD112/

SD12/NUMA120

280

MDC508/12.7RR-02

508

482.6

12.7

478

522

416

QL200/SD18/

NUMA180

522

MDC560/12.7RR-02

560

534.6

12.7 528 575 475

QL200/SD18/

NUMA180

620

MDC610/12.7RR-02

610

584.6

12.7

558

620

513

QL200/SD18/

NUMA180

710 For more info, Please download the catalog

The advantage of MEGABIT Casing System compared with the competitors models is that the percussion Energy zone transmitted by the Pilot Bit to the Ring Bit is close to the ground and located near the buttom of the Ring Bit. This guarantees more Impact Energy on the Ring Bit for more penetration rate.

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