In the manufacture of large electrical generators that are partnered with large steam turbines it is necessary to machine components to what qualifies as ultra high precision tolerances when considering the scale of the parts. An example would be armature shafts which are on the order 60 feet long, 6 feet in diameter and weigh in excess of 60 tons. These armature shafts require deep axial slots which are later filled with magnetic materials.
展开▼