MINING ROCK BITS

  • Widely used in mine drilling and other engineering projects
  • Air circulation
  • Excellent quality, effective gage protected and long life

          


Sizes and Types of Mining Rock Bits

Bits Size
API Reg. Pin. shank size
Type & IADC Code
Approximate Weight
in
mm
BS622
(IADC622)
BS632
(IADC632)
BS732
(IADC732)
BS832
(IADC832)
3 7/8
98
2 3/8
x
x
x
x
kg
lbs
4 1/8
105
x
x
x
x
6.5
14.4
4 3/4
120
2 7/8
x
x
x
x
7.5
16.6
5 7/8
150
3 1/2
8
17.7
6 1/4
158
18
39.7
6 1/2
165
x
x
x
x
20
44.1
6 3/4
170
22
48.5
7 3/8
187
x
x
x
x
32
70.6
7 7/8
200
4 1/2
35
77.2
8 1/2
215
x
x
x
x
42
92.6
8 3/4
225
44
97.4
9 7/8
255
6 5/8
70
154.4
10 5/8
270
76
176.4
11
280
86
189.6
12 1/4
315
103
227.1
13 3/4
350
137
302.1
15
380
7 5/8
x
x
x
x
165
363.6
17 1/2
445
x
x
x
x
286
617.3

Recommended Drilling Parameters for Application

Parameters
Types and IADC Code
BS622
(IADC622)
BS632
(IADC632)
BS732
(IADC732)
BS832
(IADC832)
WOB
KN/mm(Bit Dia.)
0.45 - 0.8
0.55 - 1.0
0.7 - 1.2
0.8 -1.3
lb/in(Bit Dia.)
2600 - 4600
3200 - 5800
4000 - 6900
4600 - 7500
Rotary Speed
r.p.m
120 - 60
100 - 40
80 - 40
80 -40


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