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Help Center6 7 11 12 Degree Diameter 32mm Taper Knock off Drill Bit
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Specifications
Taper knock off bitType: various
taper angle 4,4 46',7,11,12
Socket inside Dia.=15,19,22,25mm
Usage:drill/quarry
6 7 11 12 degree Diameter 32mm Taper Knock off drill bit
(Taillant conique pour le forage de Xiamen Bestlink)
Our tapered knock off bits are made with high quality alloy steel bar and tungsten carbides, through heat treatment.
Caracteristique:
(1)Taper angle: 4°,4°46″,6°,7°,11°,12°
(2)Models:chisel/cross/button bit
(3)Dia:20-45 mm
(4)Button bit shape:spherical/parabolic
(5)Socket inside dia:15/19/22/25mm
1.Tapered chisel bit
Widely used in drilling holes with depth less than 5 meters and diameter ranged in 20-45 mm by light-duty rock drill, like Y6.
| Description | Diameter | Length | Water hole | |
|
Taper degree a=4°,6°,7°,11°,12° |
mm | mm | 2 | |
| 20 | 65 | 2 | ||
| 23 | 65 | 2 | ||
| 25 | 69 | 2 | ||
| 28 | 60 | 2 | ||
| 30 | 55 88 | 2 | ||
| 32 | 55 64 71 80 | 2 | ||
| 34 | 71 80 | 2 | ||
| 36 | 74 | 2 | ||
| 38 | 74 | 2 | ||
| 40 | 74 | 2 | ||
| 42 | 74 | 2 | ||
| 45 | 74 | 2 | ||
2.Tapered cross bit
Used under any rock drilling condition and mainly used for hard or very hard rock formation because of it's comprehensive adaptability. Compared with taper chisel bits, taper cross bits have a better drilling performance because of carbide tips on cross bits doubled.
| Description | Diameter | Length | Weight | |
|
Taper degree a=6 °,7°,11°,12° Socket inside d=19,22,25mm |
mm | mm | kg | |
| 28 | 71 80 | 0.19 | ||
| 29 | 71 80 | 0.2 | ||
| 30 | 50 67 71 80 | 0.3 | ||
| 32 | 50 67 71 80 | 0.3 | ||
| 33 | 71 80 | 0.32 | ||
| 34 | 67 71 80 | 0.34 | ||
| 35 | 67 71 80 | 0.35 | ||
| 36 | 71 80 | 0.36 | ||
| 38 | 67 71 80 | 0.42 | ||
| 40 | 71 80 | 0.43 | ||
| 41 | 71 | 0.45 | ||
| 42 | 69 80 | 0.46 | ||
| 44 | 80 | 0.47 | ||
| 45 | 80 | 0.5 | ||
3.Tapered Button Bits
Comparing with taper chisel and cross bits, button bits have higher technology, much longer primary drilling time and higher drilling efficiency. According to the tungsten carbide insert, button bits can be divided into types of hemispherical, conical and parabolic button.
Description |
Diameter |
Length |
No. of button |
Weight |
|
Taper Angle a=4°46″,6 °,7°,11°,12° Socket inside d=19,22,25mm
|
mm |
mm |
pcs |
kg |
28 |
50 |
4 |
0.2 |
|
29 |
50 |
4 5 6 7 |
0.2 |
|
30 |
50 80 |
5 6 7 8 |
0.2 0.3 |
|
32 |
50 55 71 80 |
6 7 8 9 |
0.2 0.22 0.3 |
|
33 |
50 55 71 80 |
6 7 9 |
0.2 0.3 0.36 |
|
34 |
50 55 |
7 8 |
0.22 0.3 |
|
35 |
55 71 80 |
4 5 6 7 |
0.22 0.3 0.37 |
|
36 |
50 55 |
7 |
0.3 0.35 |
|
37 |
55 |
4 6 7 |
0.3 |
|
38 |
50 55 |
4 6 7 |
0.25 0.35 |
|
40 |
50 55 |
7 |
0.35 |
|
41 |
50 55 71 |
4 5 |
0.35 |
|
42 |
50 |
6 7 |
0.4 |
|
45 |
50 55 71 |
6 7 8 9 |
0.5 |
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