Bits

 

  • 5/8" (16mm) diameter carbide buttons throughout face
  • Carbide buttons positioned for better fracture of rock providing faster penetration rates
  • Several grades and types of carbide available
  • Other bit sizes available upon request
Contact our drilling experts for more information: drilling@connellmining.com
 

 

  • 5/8" (16mm) diameter carbide buttons throughout face
  • Chipways designed for faster hole cleaning
  • Carbide buttons positioned for better fracture of rock providing faster penetration rates
  • Several grades and types of carbide available
  • Other bit sizes available upon request
Contact our drilling experts for more information: drilling@connellmining.com
 

 

  • 3/4" (19mm) diameter carbide buttons throughout face
  • Chipways designed for faster hole cleaning
  • Carbide buttons positioned for better fracture of rock providing faster penetration rates
  • Several grades and types of carbide available
  • Other bit sizes available upon request
Contact our drilling experts for more information: drilling@connellmining.com
 

 

  • 9/16" (14mm) diameter carbide buttons throughout face
  • Chipways designed for faster hole cleaning
  • Carbide buttons positioned for better fracture of rock providing faster penetration rates
  • Several grades and types of carbide available
  • Other bit sizes available upon request
Contact our drilling experts for more information: drilling@connellmining.com
 

 

Unmatched in longevity and penetration rate

Numa, a leading designer and manufacturer of down hole hammers and bits, introduces the Double Dome™ (DD) Carbide Bit. This proprietary carbide design is revolutionizing the drilling industry with its ability to drill continuously for a longer period of time and producing more total footage in drilling applications all over the globe.

Numa introduced the DD bit to provide drillers with better performance and longer life in today’s demanding drilling markets. When using standard drill bits in hard rock formations, most drillers are required to sharpen their bits due to excessive wear every 300 to 400 feet (92 - 122 m) of drilling. The DD bit has drastically changed those requirements. In similar formations, the DD bit has proven to outperform standard bits by drilling up to 40% longer before initial sharpening of the carbide due to wear. This allows rig operators to keep drilling deeper without having to spend valuable time pulling out of the hole to sharpen or change bits.

The critical characteristic of the new DD bit is its distinctive new carbide consisting of a double reinforced layer that provides a double dome or nipple-like appearance. The double dome properties provide the strength and long life that make the DD Bit so unique. In fact, testing has shown that the DD Bit is able to produce upwards of 25% more footage before being retired. This increased performance allows drillers to reduce their bit costs by almost 25% over any other bits on the market today.