13

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

508.0

(20")

558.8

(22")

16.0

(0.63")

14.0

(0.55")

12.7

(0.50")

10.0

(0.39")

14.0

(0.55")

12.7

(0.50")

Single pass

41.0

445

17.52"

521

20.51"

473

18.62"

445B

Multi use

445W

Single pass

445D

Multi use

445X

Single pass

445A

Single pass

445C

US445B-12-R-153
    *OVER SIZE

US445B-15-R-112

US445B-18-R-149

UM445W-12-R-451
    *OVER SIZE

UM445W-15-R-452

UM445W-18-R-453

US445A-12-R-290
    *OVER SIZE

US445A-15-R-111

US445A-18-R-456

US445C-18-R-150

CASING PIPE ø508.0mm (20")

CASING PIPE ø558.8mm (22")

Unit: mm  (Upper)

inch (Bottom)

DHD112

QL120

NUMA11/120

NUMA125

SD12

356
386
365
387
356

39.1

42.2

43.6

41.8

445

17.52"

521

20.51"

473

18.62"

DHD112

QL120

NUMA11/120

NUMA125

SD12

356
386
365
387
356

445

17.52"

521

20.51"

473

18.62"

DHD112

QL120

NUMA11/120

NUMA125

SD12

356
386
365
387
356

445

17.52"

445

17.52"

521

20.51"

521

20.51"

473

18.62"

473

18.62"

DHD112S
NUMA120S

SD15S

QL200

NUMA180

SD18

423
447
459
445
506
544

445

17.52"

445

17.52"

521

20.51"

521

20.51"

473

18.62"

473

18.62"

DHD112S
NUMA120S

SD15S

QL200

NUMA180

SD18

423
447
459
445
506
544

445

17.52"

445

17.52"

445

17.52"

521

20.51"

521

20.51"

521

20.51"

473

18.62"

473

18.62"

473

18.62"

DHD112S
NUMA120S

SD15S

QL200

NUMA180

SD18

QL200

NUMA180

SD18

423
447
459
445
506
544
445
506
544

494

19.45"

494

19.45"

494

19.45"

494

19.45"

573

22.56"

573

22.56"

573

22.56"

573

22.56"

523

20.59"

523

20.59"

523

20.59"

523

20.59"

QL200

NUMA180

SD18

QL200

NUMA180

SD18

QL200

NUMA180

SD18

QL200

NUMA180

SD18

509
570
608
509
570
608
509
570
608
509
570
608

US445D-15-R-241

US445D-18-R-151

445

17.52"

445

17.52"

521

20.51"

521

20.51"

473

18.62"

473

18.62"

DHD112S
NUMA120S

SD15S

QL200

NUMA180

SD18

423
447
459
445
506
544

40.1

UM445X-15-R-454

UM445X-18-R-455

445

17.52"

445

17.52"

521

20.51"

521

20.51"

473

18.62"

473

18.62"

DHD112S
NUMA120S

SD15S

QL200

NUMA180

SD18

423
447
459
445
506
544

445B Pilot bit

445B Pilot bit

445B Pilot bit

445B Pilot bit

445B Pilot bit

445B Pilot bit

445B Ring bit

445B Pilot bit

445B Ring bit

445B Pilot bit

445B Ring bit

445B Pilot bit

445B Ring bit

Single pass

Multi use

Single pass

Multi use

494A

494W

494B

494X

US494A-18-R-162

UM494W-18-R-449

US494B-18-R-436

UM494X-18-R-450

47.2 

45.1 

47.9 

45.7 

494A Pilot bit

494A Pilot bit

494A Ring bit

494A Pilot bit

445B Pilot bit

445B Ring bit

445B Pilot bit

445B 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.

*

Over size : No shank breakage warranty.

DIMENSIONS

y

 Standard Type ULTRA MAXBIT / DTH