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DTH drill bits 6inch

How to choose the right DTH button bits?
ROSCHEN has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house.

Quantity:
  • ROS65-152
  • ROSCHEN
  • BIT 65-152

Product Description

 DTH button bits 6” 

Specifications:

       Diameter

No x Button,dimameter,mm

Button angle

FIushing holes

weight

Part    No

mm

inch

Gauge Buttons

Front Buttons

kg

152

6

8x18

4x16+4x14

38

2

23

ROS65-152

154

6

8x18

4x16+4x14

38

2

23

ROS65-154

156

6 1/4

8x18

4x16+4x14

38

2

23

ROS65-156

159

6 1/4

8x18

4x16+4x14

38

2

23.5

ROS65-159

165

6 1/2

8x18

8x16

38

2

24

ROS65-165

171

6    3/4

8x18

8x16

38

2

25

ROS65-171

178

7

8x18

10x16

38

2

26

ROS65-178

185

7 1/4

8x18

1Ox16

38

2

26.8

ROS65-185

190

7 1/2

10x18

13x16

38

2

27.5

ROS65-190

203

8

10x18

8x18+6x16

38

2

31

ROS65-203


How to choose the right button bits?

ROSCHEN has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house. These are designed for specific applications for all rock types, hardness's and condition. Bit life and rate of penetration are the most important criteria in selecting the right bit for a particular application. 


6”  BIT  Data Referenced By DHD360R Concave Face Bit


DTH bits 6inch

Carbide Button Shape Selection

 dth bits shape


How to select Bit Face Shape?

NO.1  Concave Face

The all-round application bit face specifically for medium hard and homogeneous rock formations.

Good hole deviation control and good flushing capacity.

 

NO.2 Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressures.  It is the most resistance to steel washand may reduce the load and wear on

the gauge buttonsbut poor hole deviation control.

NO.3 Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations.  Designed for high air pressures and good resistance to steel wash step gauge bit.

 

NO.4 Flat Face

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates can resistance to steel wash.

 

 

NO. 5 Drop Center

For high penetration rates in soft to medium hard and fissured rock formations.  Low

 to medium air pressures. Maximum hole deviation control.

 

NO.6 Pineapple Face

The Pineapple Bit can be dressed with ballistic buttons for use in soft to medium hard formations where fractured rock can be expected, or can be supplied with spherical buttons for hard and abrasive formations. 


button bits face

dth hammer bits technical trend


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