The high-quality spindle used on the V99 thoroughly eliminates deflection and vibration in all speed ranges. As the heart of the machine, the assembly accuracy of the spindle is controlled to the sub-micron level, along with that of ancillary parts. Backed by this rigorous built-in quality, the spindle suppresses rotational deflection of the tool tip for both large- and small-diameter tools to provide uniform machined surfaces of superior quality.