Granite Drilling Small Hole Little Taper Type Cross Bits
Our drill 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: Cross drill bits
(1)Drill Bits 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
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 carbide tips on cross bits doubled.
Technical data:
| 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 |
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