12

406.4

(16")

12.7

(0.50")

10.0

(0.39")

Single pass

Multi use

Single pass

27.0

26.0

27.9

354

13.94"

354

13.94"

354

13.94"

420

16.54"

420

16.54"

420

16.54"

378

14.88"

378

14.88"

378

14.88"

354A

354X

354B

US354A-12-R-105

UM354X-12-R-263

US354B-12-R-294

CASING PIPE ø406.4mm (16")

DHD112

QL120

NUMA11/120

NUMA125

SD12

233
263
242
264
233

DHD112

QL120

NUMA11/120

NUMA125

SD12

233
263
242
264
233

DHD112

QL120

NUMA11/120

NUMA125

SD12

233
263
242
264
233

354A Pilot bit

354A Pilot bit

354A Ring bit

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)

CASING PIPE ø457.2mm (18")

457.2

(18")

12.7

(0.50")

10.0

(0.39")

37.8

36.5

38.8

Single pass

Multi use

Single pass

393A

393W

393B

US393A-12-R-128

UM393W-12-R-457

US393B-12-R-458

393

15.47"

393

15.47"

393

15.47"

472

18.58"

472

18.58"

472

18.58"

426

16.77"

426

16.77"

426

16.77"

DHD112

QL120

NUMA11/120

NUMA125

SD12

DHD112

QL120

NUMA11/120

NUMA125

SD12

DHD112

QL120

NUMA11/120

NUMA125

SD12

274
304
283
305
274
274
304
283
305
274
274
304
283
305
274

393A Pilot bit

393A Pilot bit

393A Ring bit

y

 Standard Type ULTRA MAXBIT / DTH

To be continued