GMN USA is the North American subsidiary of GMN Germany. GMN is a spindle manufacturer located in Nurnberg, Germany. GMN is a world leader with over 85 years in the manufacture of precision ball bearings and high frequency grinding and milling spindles. The GMN USA facility is located in Farmington, Connecticut where we build and repair GMN spindles and as well as most other manufacturers' spindles. We also offer a full line of spindle support equipment.