Sandvik Coromant Silent tools - application guide - Manual (Page 52)

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3. Turning
Application examples
Case two: Turning internal hole
Internal turning is sensitive to vibration. Tool choice is restricted by
the component’s hole diameter and length, as the depth of the hole
determines the overhang.
Minimize the tool overhang and select the largest possible bar
diameter in order to obtain optimum stability and accuracy. For
internal turning, a dampened Silent Tools boring bar is the first
choice.
A customer with a typical internal light roughing operation of a
process flange benefitted greatly from a Silent Tools boring bar. By
getting rid of the vibration, the spindle speed could be more than
doubled, the cycle time reduced by a third and the productivity
increased by 188%.