Rotary Surface Grinders – DCM TechDCM Tech's IG 140 SD rotary surface grinding machine fills some big shoes but with a small footprint. It has a 32″ x 26″ footprint and a 56″ x 26″ operating envelope. This rotary surface grinder uses minimal shop space. Operating parameters are fully programmable for processing alloy, ceramic, and crystalline.rotary surface grinding machine,Rotary Surface Grinding｜MACHINES｜Machines｜Products .Rotary Surface Grinding. Models. Blanchard 8-12; Blanchard 11-20; Blanchard 20-36; Blanchard 22-42; Blanchard 26-48; Blanchard 32-60; Blanchard 36-66; Blanchard 42-84; Blanchard 54-84; Blanchard 73-120. Overview: Star SU offers a full range of Blanchard vertical spindle rotary table grinders, ranging from the.