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2.10.3.
26
1.
Constant tooth system – the saw band has parallel tooth pitch all over length. This
way is suitable for cutting of solid material.
2.
Variable tooth system – tooth pitch is variable. Variable tooth system is used for
profiled materials and bundle cutting. Variable tooth pitch lowers vibration of the
saw band, increases service life of the saw band and quality of the cutting area.
BOMAR for recommended Variable tooth system for band
saw.
In tables, there are advised type of the tooth system depending on sizes and form of
the cutting material.
Footnotes:
Z
Z – teeth number on one inch S – tooth with zero angle of the teeth K – tooth with positive angle of the teeth
p
Examples of the tooth system marking:
32 S – number „32" means 32 teeth on one inch (that means constant tooth system),
letter „S" marks teeth with zero angle of the tooth.
4–6 K – number „4–6" means 4 till 6 teeth on one inch
(that means variable tooth system); letter „K" marks teeth with positive angle of the
teeth.
Saw band running-in
Running-in: Cut the material with the frame lowering reduced to 50% only. When
vibrations occur increase or decrease the band speed.
When cutting small pieces run the band until approximately 300 cm
been cut. When cutting large pieces run the band for 15 minutes approximately. When
the band has been run, increase the lowering-speed to normal speed. The running in of
the saw band avoids micro-breaks on the cutting edges of new saw band ensuing from
first excessive stress. This would decrease service life substantially. The optimal running
in of the saw band produces ideal rounded cutting edges and therefore the conditions
for an optimal service life.
Note: Run regrinding saw bands too.
2
of material has
Manual version:
1.10 / Jan. 2011
Manual rev.:
1
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