|
PDC Core Bit has a wide variety of uses in coal mining, geological prospecting, oil drilling, gas exploitation, nonferrous metal exploitation and other mining. It is used to collect the underground cores (or mineral cores), when the samples of underground rocks (or minerals) are needed. |
|
Bit Size |
Flow Rate (L/s) |
Rotation Speed (r/min) |
Weight Of Bit (KN) |
Pump Pressure (MPa) |
|
|
（O.D.） |
8 1/2 |
16-22 |
50-80 |
50-80 |
7-9 |
|
8 3/8 |
|||||
|
7 1/2 |
|||||
|
（I.D.） |
4 1/8 |
16-22 |
50-80 |
50-80 |
7-9 |
|
4 |
|||||
|
Type |
Bit Size |
Common Name |
Approximate weight of bits (Kg) |
|||
|
(O. D.) |
(I. D.) |
|||||
|
Inches |
mm |
Inches |
mm |
|||
|
7 1/2×4FG1395A |
7 1/2 |
190.5 |
4 |
101.6 |
川74 |
24 |
|
8 3/8×4FG1395A |
8 3/8 |
212.7 |
4 |
101.6 |
川74 |
15 |
|
8 1/2×4 1/8FG1395A |
8 1/2 |
215.9 |
4 1/8 |
104.8 |
川83 |
26 |
|
8 1/2×4 1/8FG1395B |
8 1/2 |
215.9 |
4 1/8 |
104.7 |
川83 |
26 |
