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Trouble
Excessive blade
breakage.
Premature blade
dulling.
Blade is twisting.
Unusual wear on
side/back of blade.
Teeth missing/ripped
from blade.
Probable Cause
Material loose in vise.
Incorrect speed or feed rate.
Teeth too coarse for material.
Incorrect blade tension.
Blade rubs on the wheel flange.
Misaligned guides.
Cracking at weld.
Blade teeth too coarse.
Blade speed too high.
Hard spots in workpiece or scale on/in
workpiece.
Work hardening of material
(especially stainless steel).
Insufficient blade tension.
Operating saw without pressure on
workpiece.
Blade is binding in the cut.
Blade tension too high.
Blade guides worn.
Blade guide bearings not adjusted.
Blade guide bearing bracket is loose.
Blade tooth pitch too coarse for
workpiece.
Feed rate either too slow or too fast.
Workpiece vibrating.
Gullets loading up with chips.
Remedy
Clamp work securely.
Refer to charts on pages 25-26 or
check Machinist's Handbook for
speed/feed appropriate for the
material being cut.
Check Machinist's Handbook for
recommended blade type.
Adjust blade tension to point where
the blade just does not slip on the
wheel.
Adjust blade tracking. See page 15.
Adjust guides (pages 16-17).
Install a fresh blade, or use longer
annealing cycle if welding your own.
Use a finer tooth blade.
Try a lower blade speed.
Increase feed pressure (hard spots).
Reduce speed, increase feed
pressure (scale).
Increase feed rate.
Increase tension to proper level (page
15).
Do not run blade at idle in/on material.
Decrease feed pressure.
Decrease tension on blade.
Replace blade guides.
Adjust blade guide bearings.
Tighten blade guide bearing bracket.
Use blade with finer tooth pitch.
Adjust feed rate and/or blade speed.
Clamp workpiece securely.
Use blade with coarse tooth pitch
and/or reduce feed rate. Brush blade
to remove chips.
28
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