Sandvik Coromant Silent tools - How to reduce vibration in metal cutting - Manual (Page 11)

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Sandvik Coromant – How to reduce vibration in metal cutting 7
Turning
Choice of insert
Choosing the right insert can be enough to eliminate vibration and also
improve your manufacturing productivity.
Nose radius:
It is important to choose a nose radius that is smaller than the cutting depth
as this has the same effect as choosing the correct entering angle. If the nose
radius is too large it will push the tool in the radial direction and affect the
dimensions of the component.
Wiper inserts act as a large nose radius and will generally need a bit more
care when applying to internal turning. To decrease the radial cutting forces
it is a normal requirement to increase the feed.
Practical hints:
Always choose a smaller nose radius than the cutting depth.