ProDrill™ rock drilling tools manufacturer has a full range of DTH drill bits with CIR shanks type for a wide range of hole sizes, which are designed to match all conceivable applications for water well industries, stone quarrying, mining and construction.

Shank types: CIR90, CIR100, CIR110, etc.

Suitable rock formation and condition : Quartz ( HRC12 grade more) , Granites ( HRC: 3 to 5 grade )

DTH hammer bits hole diameter: 3", 4", 5", 6", 8"(85mm-305mm).

CIR90-95 DTH bit new design's advantages：

1. Imported premium TCI ( Tungsten Carbide Inserts ) , Longer intervals between regrinds
2.Harder and stronger bit body steel
3. Ensure the longest possible service life
4. Approximately 20 % fewer bits now handle all surface drilling applications specially for Quartz which are with very heavy duty and very abrasive rock formation and condition.

With ProDrill DTH bit, due to our special design for length of TCI imported , you will get more meters drilled before first regrind, more meters drilled between regrinds, and many more meters drilled at bit discard. This is long-lasting performance you can rely on.

Longer grinding intervals is one of the most important development criteria for Prodrill DTH bit was to improve service life 20-30% than leading bit in market , and reduce the need for constant regrinds.

Well-timed grinding is key to rock drilling productivity also for longer service life . The key is tracking your penetration rate. When it goes down, it's time to regrind.

Typically, you can drill until the wear flat ratio (width of wear flat area / the button diameter) is 40–50 %. And when you regrind, make sure that you keep a wear flat area of about 10 % – there's no point in grinding away bit service life. Our tests show that proper button grinding, regardless of button shape, has the potential to double the bit service life.

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CIR90-95mm DTH Hammer Bit for quartz