GenNx360 Capital Partners, a middle-market private equity firm, has acquired manufacturer Horsburgh & Scott, a Bolder Capital portfolio company. Based in Cleveland, Horsburgh & Scott designs and manufactures custom industrial gears and gear drives. Its products are used by industries and end markets such as steel, wind energy, plastics, mining, paper, food processing, coal and pollution control. Bolder acquired the company in 2007 for $43.5 million.