Factory rough-grinding has two key advantages. Firstly, the full cutting performance is available as soon as you start to use it – there's no need to 'run in' a new cutting wheel. Secondly, the resulting axial and radial runout accuracy is so good that the cutting performance, rate of advance and life are optimised.
STIHL diamond wheels are available in four duty grades: 5, 10, 40 and 80.