Button bit Type 06

Gauge diameter

Gauge 

angle [°]

Button × Button dia. [mm]

Flushing hole

Weight

[Kg]

Part number

[mm]

[in]

Gauge

Face

Side

Face

37

1 15/32"

35

5×9

2×7

1

1

0.5 

28RTPWS37R06M

38

1 1/2"

35

5×9

2×8

1

1

0.5 

28RTPWS38R06M

41

1 5/8"

40

5×9

2×8

2

1

0.6 

28RTPWS41R06H

43

1 11/16"

40

5×9

2×9

2

1

0.7 

28RTPWS43R06H

45

1 3/4"

35

5×10

2×9

2

1

0.7 

28RTPWS45R06M

Button bit Type 23

Gauge diameter

Gauge 

angle [°]

Button × Button dia. [mm]

Flushing hole

Weight

[Kg]

Part number

[mm]

[in]

Gauge

Face

Side

Face

37

1 15/32"

35

6×7

3×7

1

3

0.5 

28RTPWS37R23M

38

1 1/2"

35

6×8

3×7

1

3

0.5 

28RTPWS38R23M

41

1 5/8"

40

6×8

3×7

1

3

0.6 

28RTPWS41R23H

43

1 11/16"

35

6×8

3×8

1

3

0.7 

28RTPWS43R23M

45

1 3/4"

30

6×9

3×8

1

3

0.7 

28RTPWS45R23L

Cross bit

Gauge diameter

Carbide size 

W × H [mm]

Button × Button dia. [mm]

Flushing hole 

Weight

[Kg]

Part number

[mm]

[in]

Gauge

Face

Side

Face

38

1 1/2"

10×19

-

-

4

1

0.5

28RTC38V

41

1 5/8"

10×19

-

-

4

1

0.6

28RTC41V

43

1 11/16"

10×19

-

-

4

1

0.7

28RTC43V

45

1 3/4"

10×19

-

-

4

1

0.7

28RTC45V

DRIFTING & TUNNELLING EQUIPMENT

28  

DRIFTING & TUNNELLING EQUIPMENT

R28 (1 1/8") 

SERIES (Recommended gauge diameter 

Ø

37 - 

Ø

45)

Reaming bit / Pilot adapter

Cross bit

Button bit

Hex drifting rod

Coupling sleeve

Standard item list - CUSTOM BUTTONS AND FLUSHING CONFIGURATIONS ARE AVAILABLE UPON REQUEST

For details of bit design, please refer to p.14

Shank adapter