re: CBN wheels

CBN (Cubic Boron Nitride) grinding wheel is very suitable for use on high-speed grinding machines. CBN is a synthetic material with a high hardness. CBN wheels are designed to grind HSS and other metals with a hardness above 54 HRC (Rockwell scale). Do not use with softer materials.

The wheel has a steel base with a CBN coating. The steel base prevents the wheel from deforming. The wheel also does not need to be flattened and does not produce dust, unlike bonded stones. CBN wheels last a very long time, provided you use the wheel correctly.

CBN wheels remove material very effectively. Little force is needed to achieve a sharp result. Use minimal pressure when grinding to prevent the wheel and your material from overheating. You apply the right amount of pressure when the material is barely warm.

Use CBN grinding stones dry, so without water. You can use the wheel on your bench grinder or on your wood lathe with a speed between 1400 and 3000 rpm. (Dia 150) Use a suitable adapter sleeve for your machine. When using a arbor on the lathe, a speed of 1700-2000 rpm is recommended.

In all Far east offers I read mostly CBN diamond. That makes me wonder what is it. Is it CBN or is it diamond or are they using the terminology wrong. In short I don't know what I'm buying.