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DTH Drill Bit DHD3.5-138

DTH Bit DHD3.5-138
DTH hammer bits are designed for maximum performance and hole cleaning ability and high penetration rate.
ROSCHEN can design and manufacture according to customer's requirement of the down the hole bits with different Diameter, air holes numbers, carbide button shape and the face shape.

Quantity:
  • DHD3.5-138
  • ROSCHEN
  • ROS-DHD3.5-138

Product Description

DTH Drill Bit DHD3.5-138


DTH hammer bits are designed for maximum performance and hole cleaning ability and high penetration rate.

ROSCHEN can design and manufacture according to customer's requirement of the down the hole bits with different Diameter, air holes numbers, carbide button shape and the face shape.

 

DTH Bit DHD3.5-138

CODE NO.

DHD3.5-138

Shank type

DHD

Diameter

138mm

gauge buttons

7*17

Face buttons

7*14

Bit face type

Convex face

carbide design

Dome/hemispherical

approx. weight

16Kg

DTH BIT DHD3.5 138

Features of Convex Face

This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc

 

They are recognized for having excellent capability for drilling into moderately consolidated rock conditions

 

Carbide Design

 

DTH Bits with hemispherical carbide configuration are capable of drilling in hard rock. Although their penetration rate is slower in comparison to the bits with semi ballistic carbide profile, the bits equipped with these hemispherical buttons have a longer life.

 

ROSCHEN is rock drilling tools manufacturer, we offer an extensive range of DTH hammer rock drill bits with shank type: DHD3.5, DHD340A, DHD3.5R, DHD360, DHD380; and DTH bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).

 

Down The Hole Drilling Button Bits are produced from premium quality nickel-alloy steel for increased durability and wear characteristics. Specific heat treatment standards and special "stress relief" processes ensure consistent performance.

 

Down-the-hole (DTH) bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a splined drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes.


Dth Hammer Drilling Tools Specifications: 

 

ROSCHEN   DTH Hammers Specifications


Hammer   Size

Bit   Shank

ROSCHEN   Code

Connection   Thread

Suitable   bit

Working   pressure

Air   consumption



2"

BR2

ROS   11

ROS   22

RD50   box

70-90mm

0.7-1.75Mpa

0.7Mpa

4.5m3/min


1.0Mpa

4m3/min


1.4Mpa

5m3/min


3"

DHD3.5

ROS   32

API   2 3/8" Reg

90-110mm

1.0-1.5Mpa

1.0Mpa

4.5m3/min


COP32/COP34


M30

1.5Mpa

9m3/min


4"

DHD340

ROS   34

API   2 3/8" Reg

110-135mm

1.0-2.5Mpa

1.0Mpa

6m3/min


COP44


QL40


SD4

1.8Mpa

10m3/min


M40

2.4Mpa

15m3/min


5"

DHD350

ROS   52

ROS   54

API   2 3/8"Reg/API 3 1/2" Reg

135-155mm

1.0-2.5Mpa

1.0Mpa

9m3/min


COP54


QL50


SD5

1.8Mpa

15m3/min


M50

2.4Mpa

23m3/min


6"

DHD360

ROS   62

ROS   64

API   3 1/2" Reg

155-190mm

1.0-2.5Mpa

1.0Mpa

10m3/min


COP64


QL60


SD6

1.8Mpa

20m3/min


M60

2.4Mpa

28.5m3/min


8"

DHD380

ROS   82

ROS   84

API   4 1/2" Reg

195-254mm

1.0-2.5Mpa

1.0Mpa

15m3/min


COP84


QL80

1.8Mpa

26m3/min


SD8

2.4Mpa

34m3/min


M80/M85


10"

SD10

ROS   100

API   6 5/8" Reg

254-311mm

1.0-2.5Mpa

1.0Mpa

22m3/min


Numa100

1.8Mpa

40m3/min


ROS   100

2.4Mpa

55m3/min


12"

DHD1120

ROS   120

API   6 5/8" Reg

305-445mm

1.0-2.5Mpa

1.0Mpa

30m3/min


SD12

1.8Mpa

56m3/min


Numa120

2.4Mpa

78m3/min


Notes:   Any special size of DTH bits will be available by requests.


Metzke,   Remet thread is available!



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