Technical Information
Setup Recommendations
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Setup Recommendations for Bar Overhang
WIDIA-CIRCLE™ cutting tools are the finest quality boring, grooving, profiling,
and threading tools available. For more than 50 years, WIDIA-CIRCLE
has been the industry leader in solving small-diameter hole machining
problems in major manufacturing plants worldwide.
A common problem associated with any cutting
tool is extending the tool beyond its support point.
This condition of excessive overhang can cause
chatter, poor finishes, or inadequate tool life.
Toolholder
Overhang
We recommend a 4:1 ratio (4 times bar diameter) overhang when
using steel shank bars and up to a 10:1 (10 times bar diameter)
overhang when using carbide shank bars. The overhang ratios
are affected by many factors:
• Type(s) of material(s) being machined.
• Depth of cut(s).
• Feed rate(s).
Recommended conditions may still be unsatisfactory because
of chatter. Chatter can be induced by non-rigid setups or
harmonics from the machine or machining conditions. In many
cases, changing the RPM of the machine can reduce chatter.
shank diameter
(mm)
4,00mm
5,00mm
6,00mm
8,00mm
10,00mm
12,00mm
16,00mm
20,00mm
25,00mm
32,00mm
steel shank
ratio 4:1
(mm)
16,00mm
20,00mm
24,00mm
32,00mm
40,00mm
48,00mm
64,00mm
80,00mm
100,00mm
128,00mm
carbide shank
ratio 10:1
(mm)
40,00mm
50,00mm
60,00mm
80,00mm
100,00mm
120,00mm
160,00mm
200,00mm
250,00mm
320,00mm
D86
zakaz@widiahanita.ru
www.widiahanita.ru