1

DTH Hammer

Ca

sing

 O

. D

.

B

it G

a

u

g

e

(E

xt

ended

)

Ca

sing

 O

. D

.

Ca

sing

 I.

 D

.

Ca

sing

 I.

 D

.

B

it G

a

u

g

e

(E

xt

ended

)

B

it G

a

u

g

e

(R

et

ra

ct

e

d)

B

it G

a

u

g

e

(R

et

ra

ct

e

d)

Casing Pipe

Device

Casing Shoe

Pin

Bit Head

Device

Casing Shoe

Bit Head

Open

(Drilling)

Close

(Pulling out)

Open

Forward

Close

Reverse

*

 Pin is attached with rubber plug.

*

 Retainer ring and rubber plug are not attached under 4" bit.

*

 Please be careful not to get your finger snapped when assembling.

MECHANISM

COMPONENTS

2pcs for two wing type

3pcs for three wing type

()

The SUPER MAXBIT gives stability when drilling collapsing overburden formations.
This is an advanced technology compared to the other eccentric drilling methods. It consists of two to three wings 
connected to the Down The Hole Hammer. The bit head are extendable/retractable when the drill string rotates in 
the forward/reverse direction. Drilling and casing are possible simultaneously with the use of a casing shoe.
The SUPER MAXBIT has a following advantages:

a

 High-speed drilling similar to a standard DTH bit.

a

 Straight hole drilling.

a

 Uniform rotation while drilling of boulders, sand and gravel.

a

 Reliability of extending and retracting proven by customer experiences.

SUPER MAXBIT