11 Degree Tapered Rock Drill Chisel Bits for Marble Quarrying
Our drill bits are 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: Chisel 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
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.
Technical Data:
| Description |
Diameter |
Length |
Water hole |
Taper degree a=4°,6°,7°,11°,12°
Socket inside d=15,19,22,25mm |
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 |
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