A recent grinding test conducted by TGS showed impressive results on an alloy steel engine valve. Using an A60K5VS3 grinding wheel, the TGS-CL-6020 centerless grinding machine was able to maintain 0.2 Ra surface finish, roundness of 2 μm and cylindricity of 2 μm, while achieving stock removal of 0.15 mm (roughing), 0.025 mm (semi-finishing) and 0.02 mm (finishing). Cutting data included peripheral wheel speed of 45 m/s and 2.5 m/min feed rate.

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