10

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)

323.9

(12 3/4")

10.0

(0.39")

12.7

(0.50")

8.0

(0.31")

6.4

(0.25")

Single pass

Multi use

Single pass

Normal

Multi use

Single pass

21.2

20.2

21.5

21.7

20.0

17.6

281A Pilot bit

281A Pilot bit

281A Pilot bit

281A Pilot bit

273A Pilot bit

273A Ring bit

273A Ring bit

273C Pilot bit

281A

Normal

17.8

273

10.75"

273

10.75"

273

10.75"

273

10.75"

273

10.75"

281

11.06"

281

11.06"

281

11.06"

338

13.31"

333

13.11"

338

13.31"

338

13.31"

338

13.31"

338

13.31"

338

13.31"

338

13.31"

296

11.65"

296

11.65"

298

11.73"

298

11.73"

298

11.73"

305

12.01"

305

12.01"

305

12.01"

281

11.06"

281

11.06"

281

11.06"

281

11.06"

281

11.06"

281

11.06"

333

13.11"

333

13.11"

338

13.31"

338

13.31"

333

13.11"

333

13.11"

305

12.01"

305

12.01"

305

12.01"

305

12.01"

305

12.01"

305

12.01"

281

11.06"

338

13.31"

305

12.01"

DHD112

QL120

NUMA11/120

NUMA125

SD12

173.0
203.0
182.0
194.0
173.0

273A

273W

273C

273C

273X

281A

Multi use

Normal

Multi use

16.3

18.2

16.7

281W

281B

281X

US273A-08-R-051

UM273W-08-R-215

US273C-08-R439

UN273C-08-R440

UM273X-08-R-257

US281A-08-R-214

UN281A-08-R-074

UN281A-10-R-091

UN281A-12-R-062

UM281W-08-R-216

UM281W-10-R-267

UN281B-08-R-339

UN281B-10-R-441

UM281X-08-R-340

UM281X-10-R442

CASING PIPE ΓΈ323.9mm (12 3/4")

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD380

QL80

SD8

DHD310

SD10

DHD380

QL80

SD8

DHD310

SD10

DHD380

QL80

SD8

DHD310

SD10

DHD380

QL80

SD8

DHD310

SD10

123.5
123.1
116.7
123.5
123.1
116.7
124.5
124.1
117.7
124.5
124.1
117.7
124.5
124.1
117.7
130.0
129.6
123.2
130.0
129.6
123.2
150.0
146.0

130.0
129.6
123.2
150.0
146.0

130.0
129.6
123.2
150.0
146.0

130.0
129.6
123.2
150.0
146.0

281A Pilot bit

281A Ring bit

281A Pilot bit

281A Ring bit

To be continued

y

 Standard Type ULTRA MAXBIT / DTH