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Numa100 Numa120 Numa125 DTH Button Bits

Numa100 Numa120 Numa125 DTH button bits ts

Numa100 Numa120 Numa125 DTH button bits 


(1) Made from premium quality nickel-alloy steel 25SiMnCrNi2MoVA for increased durability and wear characteristics, and YK 05 tungsten carbide as same grade as internationally well-known brand. 

(2) Apply "hot (thermal) -insertion" processing procedure to insert the buttons as same as internationally well-known brand, 
(4) Entire CNC processing procedure ensure the quality consistency and reliable. 
(5) Military grade requirements of heat-treatment guarantee durability, Specific heat treatment standards and special “stress relief” processes ensure consistent performance. 
(6) Designed for maximum performance and hole cleaning ability and high penetration rate.


Our bits are interchangeable with Atlas Copco’s COP32 34 44 54 64 84, Ingersoll-Rand ‘s DHD3.5,DHD3.5HD, DHD 340A , DHD350R, DHD 360, Mission60, DHD380 QL40, QL50 , QL60, QL80.SD10, NUMA100, NUMA120,ect.

Matching the insert to the job requirements is essential in achieving the desired results. Each of the following buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels. In general, the larger the number of gauge buttons the better overall performance, especially in hard rock.


Specification   of dth hammer button bits:

Diameter:   (mm)

1-2 inch   low Air pressure DTH bits

Shank:   BR1, BR2, DHD2.5

57/64/70/76/80/82/90

3 inch   high Air pressure DHT bits

Shank:   BR3,DHD3.5,COP34,COP32,QL30,M30,IR3.5

85 / 90   / 95 / 100 / 105/110

4 inch   high Air pressure DHT bits

Shank:DHD340,COP44,M40,SD4,QL40

105 /   110 / 115 / 120 / 127/130

5 inch   high Air pressure DHT bits

Shank:DHD350,COP54,M50,SD5,QL50

133 /   140 / 146 / 152 / 165

6 inch   high Air pressure DHT bits

Shank:DHD360,M60,SD6,QL60,COP64

152 /   165 / 178 / 190 / 203

8 inch   high Air pressure DHT bits

Shank:DHD380,COP84,M80,SD8,QL80

195 /   203 / 216 / 254 / 305

10 inch   high Air pressure DTH bits

Shank:SD10,   NUMA100

254/270/279/295/305

12 inch   high Air pressure DTH bits

Shank:SD12,DHD1120,NUMA120,NUMA125

305/330/343/356/368/381

15 inch   high Air pressure DTH bits

Shank:   DHD1150, SD15,NUMA125

381/391/435/457/483/503

Over 20   inch high Air Pressure DTH bits

Shank:   NUMA180,NUMA240,

483/508/560/578/610/660


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