Product name: 7 Degree tapered cross drill bit
Product category: DTH taper drill bit
Matched connection: 7 degree taper
Diameter: 32mm
KINGDRILLING DTH taper drill bit description:
Taper cross bits can be used under any rock drilling condition 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, which means carbides shape are cross type on drill bits. Taper cross bit is mainly used for hard or very hard rock formation.
The drilling depth is usually 15m-18m of hardness grade F8-14.
| Tapered Cross Bits |
| Name | Diam
mm | Tip size(mm) | Taper | Weight
(kg) |
| H×W |
| Cross bits | 32 | 12×8 | 7 | 0.3 |
| 34 | 12×8 | 7 | 0.35 |
| 36 | 12×8 | 7 | 0.37 |
| 38 | 12×8 | 7 | 0.39 |
| 40 | 12×8 | 7 | 0.4 |
| 42 | 14×8 | 7 | 0.41 |
| 45 | 14×8 | 7 | 0.47 |
| 41 | 5×9 | 12 | 0.45 |
How to order
Chisel Bits & Cross Bits: Bit Diameter + Taper Degree + Socket Diameter.
Kingdrilling rock drill tools application:
1. Mining and quarrying drilling
2. Mining exploration drilling
3. Piling and foundation drilling
4. Water well drilling
5. Geothermal drilling
6. Horizontal directional drilling
FAQ:
1. What is top hammer drilling?
In Top Hammer Drilling the hammer produces a percussive force on the drill rods or tubes, which is transmitted to the drill bit. The feed device is usually attached with a hinged boom to a mobile unit.
2. Is top hammer drilling vs down-the-hole drilling?
The primary difference between the top hammer and down-the-hole drilling methods is where the hammer is attached. The hammer in the industrial equipment makes contact with the bit during the down-the-hole drilling method. The top hammer drilling method's activity is concentrated at the very top of the drill string.
3. How does the Top Hammer Drilling work?
The percussive force of the top hammer drilling produced by the piston of the pump in the hydraulic drilling rig, it is transmitted to the drill bit via shank adaptor and drill pipe, This is the difference between DTH drilling. Meanwhile, the percussion system drives the drilling system rotation. When the stress wave reaches the drill bit, the energy is transmitted to the rock in the form of bit penetration. The combination of these functions enables drilling holes into the hard rock, and the air compressor only performs dust removal and slagging in top hammer drilling.
The combination of these functions enables drilling holes into the hard rock, and the air compressor only performs dust removal and slagging in top hammer drilling.
Impact energy multiplied by impact frequency together creates the percussive output of the drifter. However, usually, top hammer drilling used for hole diameter maximum 127mm, and hole depth less than 20M, which in high efficiency.
4.What is the general delivery time?
15 working days for DTH bits.
20-25 working days for DTH hammer
3-5 working days for ex stock items.
5. Competitive price:
A:KINGDRILLING factory can supply you the lowest price due to direct sale to customers without distributor.
6. What is the materials?
Steel is 42CrMo, Alloy is from ZHUZHOU 601
7. Product feature
Kingdrilling DTH tools are forged by advanced electron-hydraulic forging hammer, and harness process is managed by multipurpose furnace heat treatment.
More information:
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