Wouldn't it be wonderful if "Further precise grinding" can be actualized with your currently available cylindrical grinding machines?
Quality parts with high level of functions and longer life spans at reasonable price …
Such customers' demands made us to take up the challenges to clear tighter tolerance requirements of functional part grinding such as mirror surface grinding, therefore, it is a common practice now to try to achieve machining accuracy with a precision level in nanometers (1/1,000,000).
Your products may not be competitive enough if their circularity is not quite satisfied or cylindricity varies.

Are such issues only because of your cylindrical grinding machine?
Causes of geometry faults such as improper circularity and cylindricity as well as surface roughness could be the insufficient machine precision or the balance of grinding stones. However, in many cases, all those issues may be caused by the accuracy of the "Center hole".
If you feel something should be improved, please first check the accuracy of the center hole. Not only can the causes of accuracy failure be because of center hole, but the "Centering machine" and "Center hole grinding machine" can be the causes, too.

"YCG-1215" created by a highly precise machining center manufacturing technique
YASDA's machining center, well known for its excellent precision and long lifetime, is highly appreciated by world-class machine manufacturers. And "YCG-1215", YASDA's center hole grinding machine, is developed by utilizing YASDA's designing philosophy and essences of the manufacturing technique.
YCG-1215 is a precise center hole grinding machine capable of grinding both center holes accurately without turning the work pieces. Delivery of YCG-1215 into the market made a step forward to the future potential of extra precision cylindrical grinding machines.