Located in a 90,000 square-foot manufacturing facility in Chicago, IL, Graymills is the premier global source for metalworking pumps, ink pumps and parts washers. Graymills machine tool coolant pumps and systems are specially designed for professional heavy-duty industrial filtering and lubrication needs. Since 1939, Graymills has created all their pumps with top-of-the-line laser cutting technologies, fabrication and welding processes, and CNC machining solutions.