Impregnated diamond bits
Selection table

MADE WITH SYNTHETIC DIAMONDS AND DISIGNED TO ACHIVE THE MAXIMUM PERFORMANCE
IMPREGNATED DIAMOND BITS - Description

1, 2, 4

  • For abrasive and broken formations
  • Rock types with hardness scale from soft to medium hard.
  • To be used on very powerful drills with high torque, and high thrust capability.
  • High bit loads can be applied.
  • Juferma Series 2 Recommended as multipurpose bit of this group.

Juferma Series 5, 6, 7

  • To be used in formations partly fracturated and with low abrasivity.
  • Rock types with hardness scale form medium-hard to hard.
  • Use on multipurpose drills in Surface and Underground with proper rotation speed and thrust.
  • Freee cutting bits with high penetration rate.
  • Juferma Series 6 Recommended as multipurpose bit of this group.
 Juferma Series 6

Juferma Series 8, 9, 10

  • To be used in competent and non-abrasives formations.
  • Rock types with hardness scale from very hard to ultra-hard.
  • Recommended on medium-low powerful drills with high rotation speed.
  • Juferma Series 9 Recommended as multipurpose bit of this group.
 Juferma Series 10


ROCK HARDNESS RELATED TO SERIES NUMBER OF THE BIT
SOFT MED HARD HARD VERY HARD ULTRA HARD
  • Sandstone
  • Limestone
  • Gypsum
  • Slate
  • Talc
  • Andesite
  • Schist
  • Dolomite
  • Basalt
  • Pegmatite
  • Peridotite
  • Gabbro
  • Norite
  • Quartzite
  • Granite
  • Gneis
  • Rhyolite
  • Diorite
  • Quartz
  • Jasperite
  • Chert
  • Taconite
2 7 10
  6 9
1 4 5 8