Since CBN grains have excellent stability under heat, the higher the rotation speed gets, the higher the grinding ratio becomes, as long as the rigidity of the grinding machine permits.
Refer to the following table to avoid workpiece burn, especially in dry grinding.

Since CBN grain may be decomposed into ammonia and boric acid when it reaches at the temperature of 900 Celsius under water vapor atmosphere, avoid using grinding fluid which contains fresh water or anticorrosive. You can get good result by using 5% of water-soluble oil designed for light grinding.
For higher grinding ability and longer wheel life, use 5-10% of water-soluble oil designed for heavy grinding.

Sulfur mineral oil with additives such as sulfur and chlorine reduces grinding friction and improves the life of wheel.

Truing may be applied in various method including with brake dresser, with stick, by mild steel grinding and with impregnated dresser. In any case, always do it by wet grinding and make sure there is enough grinding fluid at the contact point of wheel and truing tool.

Use A (Alundum/Alumina grain) vitrified stick for dressing to unload a wheel and expose the cutting edges.

The grain size of a stick should be one or two rank(s) finer than that of a CBN wheel. Also, the grade should be within E-H. For effective dressing, push stick tightly to the wheel and adjust the amount of grinding fluid so that slurry appears on the surface of the wheel.

The criterion of selection of the grain size when replacing an alumina wheel with a CBN wheel is as shown in the table below.