Even if yoou find one CBN may not be a good application for a Tormek. You would not be able to change grit characteristic with a grading stone so you would be locked in to a single grit. To have any good metal removal rates at the slow speed would also require a pretty coarse grit, meaning it would be very difficult to get a finely honed tool without followup on waterstones or some other flat stone treatment (Shaptons, scary sharp, etc.)
You might be happy if your usage is for turning tools. Having said all of the above, I have a 6 inch CBN mounted on a higher speed grinder. It is actually on an old Royal Oak motorized grinding spindle. If there are any old school cutter grinder hands amongst us they will probably know what that is. I use it for sharpening the inserts in my wood chipper amongst other things. ;D They last twice as long as the factory grind but it isn't like paring with a chisel.
CBN is a great abrasive but it does like some speed.
