Hard Rock Small Hole Air Drill Tapered Button Bits
Our button bit is made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment so that it can withstand the toughest rock drilling demands, and transmit intensive impact energy into the rock with the least possible loss of energy.
The taper drill bit is widely used in metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc.
Products name: Button drill bits
(1)Button bit taper angle: 4°,4°46″,6°,7°,11°,12°
(2)Models: chisel bit/cross bit/button bit
(3)Diam:20-45 mm
(4)Button bit shape: spherical/parabolic
(5)Socket inside diameter:15/19/22/25(mm)
(6)Material and process: high quality alloy steel bar and tungsten carbides, through heat treatment
Products technical data:
Comparing with tapered chisel bits and tapered cross bits, button bits has higher technology, much longer primary drilling time and higher drilling efficiency. According to the tungsten carbide insert, tapered button bits can be divided into the types of hemispherical, conical and parabolic button, etc.
| 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 |
We can design and manufacture according to customers' requirement of the Bit Dia., No. of air/water holes, carbide button shape and the face shape.
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