Black Diamond Drilling Exploration Diamond Drilling Bits

Bits Classification

Bits can be divided into impregnated bits, surface-set diamond bits, CL diamond bits, PDC bits and TC bits.

Impregnated Diamond Bits Structure

Impregnated Diamond Bits Matrix

Selection Guideline of Impregnated Diamond Bits Matrix

Impregnated Diamond Bit Coding

   Core Bit Configurations 
TypeBit SizeSeriesMatrix HeightFace Design
DiamondBCBD310Standard (Pie)
DiamondHC-HC3-HTBD714Sand Bit (Deep Internal Waterways)
DiamondPC-PC3BD816Jet Bit
BD918Wedge Water Ways
BD11Face Discharge

Guideline for Impregnated Diamond Bits Operating Parameters

Standard & Technical Parameters of Diamond Bits

Bit Range Chart - Black Diamond, Ford, Hayden, Longyear.

Bit Range CHart MOHS scale of hardness

A core lifter assembly allows the operator to clamp the core sample so the core can be broken free and retrieved to the mine surface.

Standard Core Lifters Features

BDDrill core lifters are made of high quality alloy steel and are heat treated to increase strength, toughness and wear life.

Diamond Coated Core Lifters Features

Diamond-coated core lifters add a thin composite diamond-coating (CDC) of a hard metal alloy impregnated with synthetic micro-diamonds. The diamond coating process provides superior wear resistance. Based on field results, the diamond coated core lifter returns approximately 300% longer life as compared to a standard core lifter.

slotted core lifter


  • Ideal for use in competent ground conditions
  • Increased grip area with core sample
  • Also known as the "Brown Style" core lifter
fluted core lifter


  • Ideal for use in broken ground
  • Increased flexibility; Ideal for use when encountering irregular core
  • Also known as "Broached" core lifter
spiral core lifter


  • Ideal for use in ultra hard ground conditions