This Grinding Tester is designed to test grinding efficiency of flap discs and some type grinding wheels automatically.
For several flap disc samples, an angle grinder handled by hands is adequate for the grinding testing. But for a lot of samples to test, a grinding tester is a necessary helper to take such burdensome task. 
Normally, in order to know the performance of flap discs, engineers of flap disc manufacturer need do grinding to research flap discs' performance. For example, to get the Grinding Ratio(material removed from work-piece : material lost from flap disc ),engineers need hand-operating the angle grinder for several hours sometimes. This Grinding Tester can help test engineer to reduce labor strength, far away from dust and noise. And the Testing result is not affected by operator' s subjectivity.