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High Air Pressure Down The Hole Bit

NUMA Down the Hole Bit

NUMA shank down the hole bit Product details DTH bit is our company main product. After many years search, we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection.
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NUMA shank down the hole bit

Product details

DTH bit is our company main product. After many years search, we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection, manufacturing high quality products.

If you interested in our product please contact freely.

Rock drill bits Shank type:M3,M4,M5,M6,M8,M1,M12

DTH hammer bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).

 

Numa's pneumatic lubrication are positive displacement, air-operated, lubrication systems. They are designed to inject rock drill oil into the air line under positive pressure to ensure the proper amount of oil is supplied to the DTH hammer while drilling.

3 Inch Hight Air Pressure DTH bits

Model

Bit Dia.(mm)

NO. X    Button Dia.

NO.Air    Holes(PCS)

Weight(KG)

Gauge

Front

MDHM3-85

85

6*Φ13

4*Φ12

2

4.5

MDHM3-90

90

6*Φ14

4*Φ12

2

4.7

MDHM3-95

95

6*Φ14

4*Φ13

2

4.9

MDHM3-100

100

6*Φ14

5*Φ12

2

5.0

MDHM3-105

105

6*Φ14

5*Φ13

2

5.5

4 inch high air pressure DTH bits

MDHM4-105

105

6*Φ14

5*Φ13

2

6.0

MDHM4-110

110

7*Φ14

6*Φ13

2

6.2

MDHM4-115

115

7*Φ14

6*Φ13

2

6.6

MDHM4-120

120

8*Φ14

7*Φ13

2

7.0

MDHM4-127

127

8*Φ14

7*Φ13

2

7.4

5 inch high air pressure DTH bits

MDHM5-135

135

7*Φ18

6*Φ14

2

12.5

MDHM5-140

140

7*Φ18

7*Φ14

2

13.5

MDHM5-146

146

7*Φ18

7*Φ14

2

14.0

MDHM5-152

152

8*Φ18

8*Φ14

2

14.4

MDHM5-165

165

8*Φ18

8*Φ16

2

15.0

6 inch high air pressure DTH bits

MDHM6-152

152

8*Φ18

7*Φ16

2

22.0

MDHM6-165

165

8*Φ18

8*Φ16

2

23.0

MDHM6-171

171

8*Φ18

8*Φ16

2

24.0

MDHM6-190

190

9*Φ18

9*Φ16

3

25.0

MDHM6-203

203

9*Φ18

11*Φ16

3

28.0

8 inch high air pressure DTH bits

MDHM8-305

305

12*Φ18

29*Φ16

4

95.0

MDHM8-203

203

10*Φ18

10*Φ16

2

35.0

MDHM8-216

216

10*Φ18

12*Φ16

2

40.0

MDHM8-241

241

12*Φ18

18*Φ16

2

54.0

MDHM8-254

254

12*Φ18

21*Φ16

3

57.0

MDHM8-305

305

12*Φ18

29*Φ16

4

77.0

10 inch high air pressure DTH bits

MDHM10-254

254

12*Φ18

20*Φ16

3

90.0

MDHM10-305

305

12*Φ18

36*Φ16

4

102.0

MDHM10-311

311

12*Φ18

36*Φ16

4

104.0

MDHM10-318

318

12*Φ18

38*Φ16

4

106.0

MDHM10-330

330

14*Φ18

42*Φ16

4

112.0

12 inch high air pressure DTH bits

MDHM12-305

305

12*Φ18

36*Φ16

4

152.0

MDHM12-311

311

12*Φ18

36*Φ16

4

158.0

MDHM12-330

330

16*Φ18

42*Φ16

4

165.0

MDHM12-356

356

16*Φ19

48*Φ16

4

178.0

MDHM12-381

381

16*Φ19

48*Φ18

4

195.0

MDHM125-305

305

12*Φ18

36*Φ16

4

170.0

MDHM125-311

311

12*Φ18

36*Φ16

4

173.0

MDHM125-330

330

16*Φ18

42*Φ16

4

182.0

MDHM125-356

356

16*Φ19

48*Φ16

4

191.0

MDHM125-381

381

16*Φ19

48*Φ18

4

200.0


How to order:

Shank Type + Head Diameter + Face Design + Button Shape

 

How to choose the suitable head face of the DTH drill bit?

a. Concave:

Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.

b. Convex:

Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.

c. Flat:

Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.


FAQ:

1. How to order the products?

A: Please send the inquiry with detail item description or with Model number.


2. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.


3. How to check the product are the exact one you want?

A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for a better understanding.


4. How to control quality?

A: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.


5. What is the general delivery time?

15 working days for DTH bits.

20-25 working days for DTH hammer

3-5 working days for ex stock items.

 

6. What is the Application?

Mining, Quarrying, Tunneling, Construction, Geological Exploration, Water-well Drilling, Oilfield & Gas Industries.

 

 MING hammer drill bits factory from china.jpg

 


Hot Tags: NUMA down the hole bit, China, manufacturers, price, in mining, made in China
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