3

CASING PIPE ø114.3mm (4 1/2")

D

4

Ring Bit I. D.

t : Wall Max.Thickness

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

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

Single pass

Multi use

DHD065

DHD065

5.0

5.0

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

DHD3.5

COP34
COP32

8.5
9.1
8.5
8.5
9.1
8.5
8.5
9.1
8.5
8.7
9.3
8.7
8.7
9.3
8.7
8.7
9.3
8.7
9.5

10.1

9.5
9.7

10.3

9.7
9.7

10.3

9.7
9.7

10.3

9.7

10.1
10.7
10.1
10.1
10.7
10.1
10.1
10.7
10.1

2.7

2.4

4.7 

4.7 

4.4 

4.8 

4.8 

4.6 

3.9 

3.9 

4.0 

4.5 

3.8 

3.9 

4.5 

56

2.20"

59

2.32"

100

3.94"

99

3.90"

74

2.91"

73

2.87"

89.1

(3 1/2")

114.3

(4 1/2")

6.3

(0.25")

7.0

(0.28")

10.0

(0.39")

8.0

(0.31")

6.5

(0.26")

6.35

(0.25")

6.0

(0.24")

056D

059W

Single pass

Normal

Multi use

Single pass

Normal

Multi use

Multi use

Single pass

Normal

Multi use

Single pass

Normal

Multi use

72

2.83"

72

2.83"

72

2.83"

72

2.83"

72

2.83"

72

2.83"

78

3.07"

80

3.15"

80

3.15"

80

3.15"

82

3.23"

82

3.23"

82

3.23"

126

4.96"

126

4.96"

122

4.80"

126

4.96"

126

4.96"

122

4.80"

124

4.88"

124

4.88"

124

4.88"

128

5.04"

126

4.96"

126

4.96"

128

5.04"

92

3.62"

92

3.62"

92

3.62"

95.5

3.76"

95.5

3.76"

95.5

3.76"

98

3.86"

99.5

3.92"

99.5

3.92"

99.5

3.92"

100

3.94"

100

3.94"

100

3.94"

072A

072A

072W

072B

072B

072X

078W

080A

080A

080W

082A

082A

082W

US056D-02-R-266

UM059W-02-R-240

US072A-03-BB-004
US072A-03-R-035

UN072A-03-BB-005
UN072A-03-R-077

UM072W-03-R-285

US072B-03-R-090

UN072B-03-R-368

UM072X-03-R-369

UM078W-03-R-239

US080A-03-R-341

UN080A-03-R-249

UM080W-03-R-371

US082A-03-R-372

UN082A-03-R-373

UM082W-03-R-342

072A Pilot bit

072A Ring bit

072B Pilot bit

080A Pilot bit

082A Pilot bit

CASING PIPE ø89.1mm (3 1/2")

Unit: mm  (Upper)

inch (Bottom)

D

3

Pilot Bit O. D.

D

2

Casing O. D.

D

1

Bit Gauge

Single Pass Model

(For short hole depth drilling)

Normal Model

(For longer hole depth drilling)

Multi-Use Model