Tool Selection Guide
Choosing the Correct Small Hole Boring Bar
5 Select the appropriate insert based
on style, grade, and geometry.
6 Determine the Speed and Feed Chart
with the appropriate cutting data.
A Based on grade and edge geometry,
identify starting speed (vc) and feed (fz).
The fi rst choice starting feed is in bold.
B Use the corresponding speed located
in the same column below the feed
information.
A
B
widia.com
D7
B