Spherical Flat Face T51 89mm Button Drill Bit Thread Rock Drill Bit

Flat Face T51 89mm Thread Rock Drill Bit with Spherical Insert Buttons

Drill bit button bit:
1. Product Name:tungsten carbide tapered porcelain tile drill bit .
TypesTapered chisel bits, Tapered cross bits, Tapered button bits
2. Application:Tapered drill bits are used in granite and marble quarry, gold mine, railway, tunnel, etc. for drilling
3. Feature:Tapered drill bits connect tapered drill steel of rock drill for drilling holes
4. Material:High quality carbide and high quality steel
5. MOQ:No requirement for testing and trial order

In addition to the choice of tunsten carbide button grade, how to choose the drill bit design is very important for the drilling work efficiency, also it will have a direct impact on the hole effect & vertical degree. Combined with our production and sales experience, we have summarized some of the following lessons for reference only:
Spherical buttons: The height of exposed teeth is low, mainly used in the very hard rock formation above F14, to improve wear resistance, to prevent the situation of debris, it should take lower drilling speed.
Ballistic buttons: It can expose more height of buttons, mainly used in soft rock and ordinary rock below F12, with quicker drilling speed, but encountered hard rock, very easily to happen buttons debris phenomenon.
1. Soft rock drill bit
Uses: mainly used in non-crushing hardness, hardness F=8 or less, non-abrasive rock, it’s more suitable to take new drop center face, the bit diameter is small, with semi-ballistic buttons or ballistic buttons, which will be easier to discharge debris to help improve work efficiency, the tungsten carbide wear resistance is good.
2. Medium-hard rock drill bit
Uses: used in ordinary rock hardness, hardness F=8~14, non-abrasive rock. It’s more suitable to take flat face, the bit diameter is bit, with spherical buttons.
3. Hard rock drill bit
Uses: mainly used in the rock hardness above F=14, non-abrasive rock, with bigger & spherical buttons, the tungsten carbide buttons impact resistance and wear resistance is better, but the cost is higher than the ordinary type as its bigger button diameter.
4. Abrasive rock drill bit
Uses: mainly used in high abrasive quartz rock, and the button diameter & height is big, with more smooth face design in order to exclude rock slag easily, with better impact resistance and abrasion resistance.

Technical Data