11

Casing Pipe

Ring Bit

Pilot Bit

Wall Max.

Thickness

Type

Model

Compatible

Part

System Part

Number

Outer

Dia.

Inner

Dia.

Hammer

Weight

(kg)

Weight

(kg)

Ri

n

g S

e

t

(R

in

g B

it &

Ca

sing

 Shoe

)

D

2

D

4

Outer

Dia.

D

1

Outer

Dia.

D

3

t

Unit: mm  (Upper)

inch (Bottom)

355.6

(14")

12.7

(0.50")

9.5

(0.37")

7.9

(0.31")

6.3

(0.25")

Normal

Multi use

25.3

24.2

25.3

25.6

26.4

300

11.81"

370

14.57"

327

12.87"

300

11.81"

370

14.57"

327

12.87"

300A

300W

300X

Normal

Normal

300C

300D

UN300A-12-R-055

UN300A-10-R-198

UM300W-12-R-443

UM300W-10-R-444

US300B-10-R-487

UN300B-12-R-445

UN300B-10-R-446

UM300X-10-R-448

UM300X-12-R-447

UN300C-12-R-347

UN300D-12-R-357

CASING PIPE ΓΈ355.6mm (14")

DHD112

QL120

NUMA11/120

NUMA125

SD12

189.5
219.5
198.5
210.5
189.5

DH310

SD10

167.5
163.5

300

11.81"

370

14.57"

327

12.87"

300

11.81"

300

11.81"

370

14.57"

370

14.57"

327

12.87"

333.5

13.13"

DHD112

QL120

NUMA11/120

NUMA125

SD12

189.5
219.5
198.5
210.5
189.5

DH310

SD10

167.5
163.5

DH310

SD10

169.0
169.0

300

11.81"

370

14.57"

333.5

13.13"

300

11.81"

370

14.57"

333.5

13.13"

DHD112

QL120

NUMA11/120

NUMA125

SD12

191
221
200
222
191

DH310

SD10

169
165

300

11.81"

370

14.57"

333.5

13.13"

300

11.81"

370

14.57"

333.5

13.13"

DHD112

QL120

NUMA11/120

NUMA125

SD12

191
221
200
222
191

DH310

SD10

169
165

300

11.81"

300

11.81"

370

14.57"

370

14.57"

333.5

13.13"

333.5

13.13"

DHD112

QL120

NUMA11/120

NUMA125

SD12

DHD112

QL120

NUMA11/120

NUMA125

SD12

191
221
200
222
191
191
221
200
222
191

300A Pilot bit

300A Pilot bit

300B Pilot bit

300B Pilot bit

300B Pilot bit

300B Ring bit

300B Pilot bit

300B Ring bit

Note 1) Normal model enables to be re-used in case of short hole drilling.
Note 2) To order, please advise the system type, casing size / hammer size and the ring bit models.
Note 3) Special types are also available according to costomer's request.

DIMENSIONS

y

 Standard Type ULTRA MAXBIT / DTH

300B

300B

Normal

Multi use

25.6

24.4

Single pass