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  • 12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
    12 inch Raise bore drilling Raising Drilling Hob Reamer bit
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  • 12 inch Raise bore drilling Raising Drilling Hob Reamer bit

    Reamer bits are mainly used in coal mines, metal mines, water conservancy and hydropower projects and other fields. The overall structure design and material selection of drill bits are scientific and reasonable. There are two kinds of tooth shapes to ensure that the drill bit has the advantages of good wear resistance, high overall strength and good rock breaking effect during drilling.

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Reamer bits are mainly used in coal mines, metal mines, water conservancy and hydropower projects and other fields. The overall structure design and material selection of drill bits are scientific and reasonable. There are two kinds of tooth shapes to ensure that the drill bit has the advantages of good wear resistance, high overall strength and good rock breaking effect during drilling.

Reamer bits are mainly used in coal mines, metal mines, water conservancy and hydropower projects and other fields. The overall structure design and material selection of drill bits are scientific and reasonable. There are two kinds of tooth shapes to ensure that the drill bit has the advantages of good wear resistance, high overall strength and good rock breaking effect during drilling.



No.

Reamer bit Size

Alloy

Alloy Lines

Hob internal structure

mm

1

233

wedge tooth

5

Thrust + roller structure

2

310

wedge tooth

5/6/8

Thrust + roller structure                      Tapered roller bearing structure Ball + roller structure

3

317

wedge tooth

5/6

Thrust + roller structure                       Tapered roller bearing structure

4

320

wedge tooth

5

Thrust + roller structure

5

322

wedge tooth/Conical teeth

5/6/8

Thrust + roller structure      Tapered roller bearing structure        Ball + roller structure

6

324

Conical teeth

5

Thrust + roller structure

7

325

Conical teeth

5

Thrust + roller structure

8

330

Conical teeth

4

Thrust + roller structure

9

339

Conical teeth

5

Thrust + roller structure

10

340

wedge tooth

4/5

Tapered roller bearing structure         Ball + roller structure

11

346.7

wedge tooth

4/5

Tapered roller bearing structure Ball + roller structure

12

381

wedge tooth

5

Tapered roller bearing structure Ball + roller structure


Schematic diagram of ream drilling in raise air drilling
1-Raise boring machine;
2-Air compressor;
8-Drill rod;
10-Air duct nozzle;
11-Air duct;
12-Air duct splitter;
13-Reamer bit;
14-Hob;
15-Steel beam of the boring machine


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