2

100

80

60

40

20

0

48

12

16

20

24

28

32

4
8

12
16
20
24
28
32

4-15

19-26

33-45

42-57

59-80

72-98

81-111

90-122

140-530
670-920

1,170-1,590

1,480-2,010

2,080-2,830
2,540-3,460
2,860-3,920

3,180-4,310

0.5-1.0

0.5-1.0

y

 Rotation Speed of Bit

Target external rotation speed to 15-20m/min.

Refer to the following figure for rotation.

Select the range of uniform rotation during drilling.

The SUPER MAXBIT is designed for drilling in gravel, clay, sand mixture, boulders and easy collapsing overburden.

The system is applicable for the various intentions with the combination of appropriate rig and drill.

y

 Exchange of components is necessary

a

 Wings

1. When the wear detection mark on a wing disappears.

2. When the carbide wear is excessive.

3. When wing body wears and carbides pop out.

a

 Device

When the wear detection marks on the device end 

disappear.

a

 Pin

When the wear attains the following value.

Please exchange the pin if you observe excessive wear.

Q : Air supply (m

3

/min)

D : Inside diameter of casing (mm)

d : Outside diameter of jacket or hammer (mm)

V : Air speed 1,100-1,500 (m/min)

y

 Setting Compressor

a

 Pressure

 • Set between 0.7 to 1.0MPa (100-150psi)

 • Consider the depth of underground water when drilling

  through the layer.

  (In case of 30m (90ft) depth, add 0.3MPa (45psi) to the 

   air pressure.)

 • Do not set over 1.5MPa (225psi)

a

 Air Consumption

 • Set the air supply 

  

usingthe following formula.

Q=

V(D

2

–d

2

)

1273500

Wear
Detection
Mark

Water Well

Drilling water wells down to 50-250m in depth.

Piling

After casing through the collapsing overburden, 

insert a H-steel, then pull up the casing.

Foundation

Foundational construction of buildings and bridges 

up to 32"(ø800) of casing diameter.

Pipe Roof, Water Service

Water Remove,Anchoring

It achives excellent results for drilling of 

long holes and hard formations using 

the Down The Hole Hammer.

Top-Hammer applications are available.

Geothermal, Oil Well

Surface drilling down to 50m in depth 

for geothermal and oill well.

Fore Piling

For piling as a reinforced method of 

tunneling in collapsing overburden.

Wear
Detection
Mark

Amount of Wear (mm)

Geometry

Amount of Wear (mm)

Amount of Wear (mm)

Two Wing Type

Three Wing Type

Wear
Detection
Mark

Wear
Detection
Mark

OTHERS

APPLICATIONS

Rotation Speed

Rot

at

io

n S

p

e

e

d (

min

-1

)

Nominal Size (in.)

Recommended Air Consumption

Nominal Size

(in.)

Air Supply

(m

3

/min)

(cfm)