Pacamor Kubar Bearings is a domestic manufacturer of high precision aerospace ball bearings, miniature, precision bearings, metric ball bearings and instrument bearings. All PKB bearings are produced at our quality certified factory in Troy, NY. PKB maintains ISO 9001:2015 / AS9100:2016 / DFARS / FAA TSO-C149 / in-house DMIR. PKB ball bearings can be found in critical aerospace projects, military and guidance systems, precision flow meters, medical tools, and high speed surgical handpieces.