Sandvik Coromant Silent tools - application guide - Manual (Page 56)

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3. Turning
Product overview
Selection of boring bar has a big impact on production economy.
The Sandvik Coromant tool program is comprehensive and covers
solutions from diameter 10 to 100 millimeter (0.394 to
3.94 inch) as standard off-the-shelf tools that will be delivered
within 24 hours. Outside that range, engineered tools up to
diameter 600 millimeter (23.6 inch) are available.
Overhangs 3–14 x BD bars are available while for Coromant Capto,
you will find sizes from diameter 16 to 100 millimeter (0.63 to
3.94 inch).
Productive for short overhangs
Generally, you can use a steel or carbide boring bar for overhangs
up to 4 x BD, but even in this range, a Silent Tools bar will give you
very productive advantages. Overhangs up to 10 x BD are usually
solved by applying a steel dampened boring bar to accomplish a
sufficient process, while overhangs over 10 x BD require a carbide
reinforced dampened boring bar to deal with radial deflection and
vibration.