The above formula 77A80-I8VLN or 77A80-I8VLR for 8,800 machines is composed of our special elongated sharp grain, in a 80 grit size (80 grit, finer than 60, presents thousands more cutting teeth to the work surface) appears far more effective than standard cylindrical and centerless grinding wheels. We have found I8VLR is the best grade hardness and open structure for great grinding performance. If the grinder operator finds this specification wears a little rapid for his average piece size and material, a grade change might be more appropriate for the operation.
The New Generation of Dual Structure Porosity Vitrified Wheels
for high performance surface and creepfeed grinding.