UMBRAGROUP AND THOMPSON LINEAR MOTION are OEM manufacturers of aerospace components specializing in primary, secondary and high lift system components. Portfolio includes motion control products inclusive of ballscrews, gearboxes, transmissions and torque tubes. FAA/EASA/CAA/CAAC approved repair stations. Full range of services for Umbra, Beaver and Linear Motion (Saginaw) products. Umbra is the largest manufacturer of ballscrews for aviation applications worldwide. Umbra offers repair, overhaul and exchange services. 24 hour AOG service.