Superabrasive Grit Size and Concentration
The chosen grit size affects the performance of the
wheel, determining the stock removal rate and surface finish that can be
Coarser grit size enables higher material removal rate and rougher
surface finishing, while a fine grit size is used for attaining a
smoother surface finishing.
The grit designation is prefixed with a "D" to denote diamond and a "B"
to denote CBN.
concentration is the ratio between the diamond/CBN grains’ weight and
thevolume of the abrasive layer. For example, a standard concentration
of 100 equals 4.4 carats per cubic centimeter.
The concentration of the abrasive grain has a direct effect on the
performance of the grinding tool.
High concentrations (100-200) are suitable for mass production of parts
and tools made from tungsten carbide, HSS, ceramic products, creep-feed
and profile grinding.
Main advantages: long lasting, cost effective, low maintenance grinding
tools, which guarantee high removal rates, high surface finish for
overall production efficiency. Mainly used in resin and metal bonds.
Medium concentrations (75-125) used for tool maintenance, resharpening
and internal grinding.
Mainly used in resin and metal bonds.
Low concentrations (25-100) are suitable for cutting discs, honing,
dressing, drilling and general uses.