T45 76mm 82mm 89mm 115mm Hydraulic top hammer button rock drilling
bits
high quality 32mm,34mm,36mm,38mm,41mm conical rock drilling
bits/taper rock drilling bits for hard rock drilling
1 Product description of Rock Drilling Bits
Materials and produce process details :
Materials- we use 45CrNiMoVA and YK05 Tungsten carbide to produce
our taper drill bit , both are famous materials for drill bit
produce in the world .
Advanced technology---We produce our taper button drill bit with
hot-pressing technology which is the best-advanced technology of
producing taper button bit up to date .
Button bits should be reground when penetration rates drop or if
the cemented carbide shows signs of damage
Fixed grinding routines often result in good working practices .
Bits for instance , can be examined and then reground after a
specific number of holes, or at the end of the shift . Premature
grinding is not necessarily uneconomical since less carbide needs
to be ground off . It is better to regrind rather than reducing
productivity due to damage .
Correct grinding adds considerably to drill bit service life . But
equally important , it also enhances the performance of the entire
drilling operation , especially hole straightness .
Grinding cone drill holes is the most popular cone drill bit having
a head diameter selected from a variety of 48 mm to 26 mm . With
carbide drill thermocompression scalloped skirt portion , the
tapered scalloped drill bit having good properties and excellent in
life .
2 Product Data of Rock Drilling Bits
We manufacture various tapered button bits in different degrees as
below :
Bit diameter: 32mm ~ 41mm ;
Tapered degree : 4°46’ , 6° , 7° , 11° , 12° ;
Shank sizes: Hex. 19mm, Hex, 22mm and Hex. 25mm;
Buttons configuration : 4 buttons , 5 buttons , 6 buttons , 7
buttons , 8 buttons
| Diameter | Buttons*De | Flushing hole | Skirt Length |
| mm | Gauge | Front | Side | Front | mm |
| 32 | 3x8mm | 2x7mm | 1 | 1 | 50,55,60 |
| 32 | 4x7mm | 2x7mm | 1 | 1 | 50,55,60 |
| 32 | 5x7mm | 2x7mm | 1 | 1 | 50,55,60 |
| 32 | 6x7mm | 2x7mm | 1 | 1 | 50,55,60 |
| 32 | 6x7mm | 2x7mm | 1 | 2 | 50,55,60 |
| 34 | 3x8mm | 2x7mm | 1 | 1 | 50,55,60 |
| 34 | 4x8mm | 2x7mm | 1 | 2 | 50,55,60 |
| 34 | 5x7mm | 2x7mm | 1 | 1 | 50,55,60 |
| 35 | 6x7mm | 2x7mm | 1 | 2 | 50,55,60 |
| 36 | 3x9mm | 1x8mm | 1 | 1 | 50,55,60 |
| 36 | 3x9mm | 2x7mm | 1 | 1 | 50,55,60 |
| 36 | 4x8mm | 2x7mm | 1 | 1 | 50,55,60 |
| 36 | 4x8mm | 2x7mm | 1 | 2 | 50,55,60 |
| 36 | 5x8mm | 2x7mm | 1 | 1 | 50,55,60 |
| 36 | 5x8mm | 2x7mm | 1 | 2 | 50,55,60 |
| 38 | 3x9mm | 1x9mm | 1 | 1 | 50,55,60 |
| 38 | 3x9mm | 2x7mm | 1 | 1 | 50,55,60 |
| 38 | 5x9mm | 2x7mm | 1 | 1 | 50,55,60 |
| 38 | 5x9mm | 2x7mm | 1 | 2 | 50,55,60 |
| 40 | 3x9mm | 1x9mm | 1 | 1 | 50,55,60 |
| 40 | 3x9mm | 2x7mm | 1 | 1 | 50,55,60 |
| 40 | 5x9mm | 2x7mm | 1 | 1 | 50,55,60 |
| 40 | 5x9mm | 2x8mm | 1 | 2 | 50,55,60 |
| 41 | 5x9mm | 2x8mm | 1 | 2 | 50,55,60 |
