Spindle motors require specialized skills and tools in order to complete effective repairs. It is important for any company that repairs spindle motors to have precision measuring devices to check mechanical tolerances, balance, and feedback signal integrity. ZEWT has experience with manufacturers such as Mitsubishi, Yaskawa, Fagor, and Fanuc just to name a few.source url- http://www.zewtrllc.com/spindle-motor-repair/