Custom Production Grinding, based in metropolitan Milwaukee, provides precision grinding and honing of cylindrical parts, and surface grinding, for original equipment manufacturers (OEMs) and other companies in the Midwest. We can meet tolerances to 0.0002 inch diameter, lengths to 0.0004 inches, and finishes to a smoothness of 8 Ra. All the instruments, gages and inspection equipment we use to verify that we meet part specifications are regularly certified for accurate performance. Our services include: CNC OD Grinding Centerless Thru-Feed and In-Feed Grinding ID Grinding and Honing Semi-Automatic/Universal OD Grinding Surface Grinding We are able to make special tooling in order to grind difficult parts such as crankshafts and other eccentric parts. We provide prototype runs as well as high production runs. All our work is done in a climate-controlled 33,000-square-foot facility that also has two quality control inspection rooms that each have their own HVAC systems.