Rock Drilling, Underground Mining, Quarry, Blasting, etc
Name
Tungstern Carbide Threaded Button Rock Drill Bits
R28
Drill Bit
Bit Dia.
NO x Button x Dia.
Flushing Hole
Weight
mm
inch
Front
Gauge
Angle
Front
Side
（KG）
Spherical Buttons
37
1 29/64
2x7
5x9
30°
1
1
0.5
38
1 1/2
2x8
4x9
30°
1
2
0.6
38
1 1/2
2x7
5x9
30°
1
1
0.6
41
1 5/8
2x8
5x9
35°
1
1
0.7
43
1 2/3
2x9
5x9
30°
1
2
0.8
45
1 3/4
2x9
5x10
30°
1
2
0.9
45
1 3/4
3x8
6x9
30°
1
3
0.9
Parabolic Buttons
37
1 4/9
2x7
5x9
30°
1
1
0.5
38
1 1/2
2x8
4x9
30°
1
2
0.6
38
1 1/2
2x7
5x9
30°
1
1
0.6
41
1 5/8
2x8
5x9
35°
1
1
0.7
43
1 2/3
2x9
5x9
35°
1
2
0.8
45
1 3/4
2x9
5x10
30°
1
2
0.9
45
1 3/4
3x8
6x9
35°
1
3
0.9
48
1 7/8
2x9
5x11
30°
1
2
1.0
48
1 7/8
3x8
6x9
35°
1
3
1.0
38
1 1/2
14x8
1
2
0.6
41
1 5/8
14x8
1
4
0.7
43
1 2/3
14x8
1
4
0.7
45
1 3/4
14x8
1
4
0.9
51
2
14x8
1
4
1.1
Drill Roll
Bit Dia.
Dimaeter
Weight
mm
inch
mm
inch
（KG）
2400
7'10"
28
1 1/8
12.2
2750
9'
28
1 1/8
14.4
3700
12'11/2"
28
1 1/8
18.9
4000
13'1/8"
28
1 1/8
20.4
4310
14'11/2"
28
1 1/8
22.0
4920
16'11/2"
28
1 1/8
25.3
2900
9'61/8"
32
1 1/4
18.8
3090
10'11/2"
32
1 1/4
20.0
3700
12'11/2"
32
1 1/4
24.0
4310
14'11/2"
32
1 1/4
27.9
3090
10'11/2"
32
1 1/4
20.0
3700
12'11/2"
32
1 1/4
23.5
3090
10'11/2"
32
1 1/4
20.0
3700
12'11/2"
32
1 1/4
24.0
4000
13'13/8"
32
1 1/4
25.9
4310
14'11/2"
32
1 1/4
27.9
3050
10'
28
1 1/8
15.0
3050
10'
28
1 1/8
15.0
Coupling
Bit Dia.
Dimaeter
Weight
mm
inch
mm
inch
（KG）
150
5 7/8
44
1 3/4
1.0
150
5 7/8
40
1 37/64
0.9
170
6 3/4
55
2 5/32
2.0
160
6 5/16
45
1 3/4
1.2
160
6 5/16
56
1 13/64
2.5
Minimum Order Quantity
N/A
Price
Packaging Details
Standard Export Delivery Package
Delivery Time
7days
Payment Terms
T/T
Supply Ability
Based on Detailed Order
Product Description Our cross bits diameters are from 38mm to127mm, and different type are available, like R22, R25, R28,R32, R38, T38, T45, T51, ST58, ST68, etc. Feature: 1. Excellent drilling penetration 2. Used in very hard or hardest rock formation 3. Adequate for various construction conditions 4. Strong corrosion resistance Application: 1. The cross bit is suitable for digging of very hard rock formation, hard formation and crack-grown formation. 2. All cross bits have to be reground at regular intervals to crush rock efficiently. 3. We choose different material and size for the cross bits in order to adapt the different rock formations and Our products are widely used in the scope of mining, water well drilling and exploration, anchor grouting project, side slope protection engineering, oil and gas engineering,underwater rock drilling & blasting operations of seaport channel, hydropower project, national defense projects ect.
