Promac SY-315 Mode D'emploi page 15

To break in your new blade, run it at only 30% of normal
pressure for ten minutes.
Then gradually increase to normal pressure.
12.2 Blade structure
Bi-metal blades are the most commonly used.
12.3 Blade type
They differ essentially in their constructive characteristics:
- Shape and angle of teeth
- Teeth pitch
- Off-set
Choose a toothing that is appropriate to the workpiece
being processed. Ideally, at least 3 teeth should be in
action at the same time.
The toothing should not be smaller than necessary, as
the cutting speed is reduced if there are too many small
teeth working on the workpiece simultaneously, which
causes the saw band to wear more quickly, and makes
the cuts crooked and distorts them.
The following table shows the approximate toothing of
the saw bands for a specific material thickness. For
further information please contact your saw band dealer.
SY-315 / SY-315L
Comments
10/14 toothing provides good cutting results for thin-walled
pipes and profiles.
The choice of toothing (i.e. the number of teeth per inch)
should be such that at least 3 teeth are always in action at
the same time.
Feed pressure selection:
A good indication of proper feed pressure is the shape of the
cutting chips.
Perfect:
Loose curled chips
If the chips are thin or powdered increase the feed pressure.
If the chips are burned reduce the cutting speed and
decrease the feed pressure.
Fine Tooth Pitch:
- For thin wall materials (tubes and profiles)
Coarse Tooth Pitch:
- For large cross-sections
- For soft materials (aluminum)
When cutting thick material, a coarse Tooth Pitch "T" is
needed to accommodate the big chips
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