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When Two Spindles Are Better Than One
Machining centers with multiple spindles offer a compromise between flexibility and productivity. Different machine designs use the multiple spindles in different ways.

According to this comparison, twin spindle machining can cut the cost per piece by at least 25 percent. The comparison also suggests that the most cost-effective use of the twin-spindle machine occurs when four pieces are machined per cycle. Illustrations courtesy of Chiron America.