Sandvik Coromant Silent tools - application guide - Manual (Page 62)

60
3. Turning
Tips and hints, summary
Reduce the risk of vibration by choosing the largest possible bar
diameter with the smallest possible overhang. Use recommended
clamping length, minimum 4 x BD.
Cut off of the CR boring bars above 10 x BD is not allowed. For
570-4C bars, clamping over the dampening mechanism is allowed,
while it is not allowed for 3C bars. When a 570-3C short design bar
is cut-off to minimum length, the clamping length must not exceed
3 x BD to avoid clamping over the dampening mechanism. Never
cut-off 570-3C bars diameter >100mm (3.94 inch).