Preston, Washington - National Precision Bearing, NPB, a leading supplier and distributor for airframe control bearings, spherical bearings, rod end bearings, miniature bearings and commercial industrial bearings announces the opening of a new ISO Class 6 cleanroom facility. This new facility more than doubles its current capacity for bearing relubrication services. The additional space and new equipment will make it possible to meet the increasing Aerospace, Defense, Medical, and Food ...