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The concentration specifies the portion of the abrasive grain
(diamond or CBN) processed in the abrasive layer. Since no
basic standard exists for the concentration, we have adopted
the commonly accepted international values.
Based on these:
Concentration 100 = 4.4 carats of abrasive grain in a 1cm3 abrasive layer
The concentration influences the performance of diamond and CBN grinding tools decisively.
It affects:
- the service life of grinding tools,
- the stock removal rate,
- profile retention,
- the dimensional constant of the machined workpiece,
- the finish smoothness of the machined workpiece
- the price of the grinding tool
Selection of concentration
The concentration must be matched with the grinding behavior and the parameters of the grinding tool.
We recommend the following concentrations:
 High concentration C 100 -> C 135
Grinding process:
- Profile and shape grinding
- Deep grinding
- Internal cylindrical grinding
Grinding tools with:
- narrow abrasive layer
- coarse abrasive grain
- hard bond
Medium concentration C 50 -> C 75
Grinding process:
- External cylindrical grinding
- Face grinding
- Internal cylindrical grinding
Grinding tools with:
- finer abrasive grain
- softer bond
- wider abrasive layer
Low concentration C 25 -> C 28
Cup wheels with a very wide abrasive layer or an extremely fine abrasive grain
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