Home › Blog › Buying Guide › Industrial Insights: How to Spot Quality in Pre-Owned, Used, Secondhand, Surplus CNC Equipment Before Purchase Okamoto ACC-12.24DX Automatic Surface Grinder – Year 2012 made in Japan When assessing a used surface grinder like the Okamoto ACC-12.24DX (Automatic / Hydraulic / Saddle type, circa 2012 or similar), your goal is to distinguish a machine that still has precision life left from one that is too worn, misaligned, or risky to refurbish....