CBN (cubic boron nitride) abrasive structure is generally composed by three parts of the working layer, substrate, buffer layer.dressing rollerWorking layers, also known as the CBN layer, by the abrasive, the binding agent and the filler composition, the working portion of the abrasive. Buffer layer, also known as non-

CBN layer, by a binding agent, a metal powder and a filler composition, is the portion of the CBN layer is firmly connected to the base body.
rotary dresserThe substrate is made from aluminum, steel, or bakelite processing, since the role of supporting the working layer and the loaded card abrasive.