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Use and maintenance manual S20DSP
SOLUTIONPROBABLE CAUSEPROBLEM
Blade path fault
' Front flywheel position incor-
rect
.Check that the band saw is
correctly positioned on the
flywheel. Adjust the position
of the flywheel under the
blade, moving the shaft of
the flywheel
' Flywheels worn .Replace
' Gaps full of swarf .Clean inside machine using
blown air.
' Blade guide head alignment .Check and adjust
Blade broken
' Cutting speed too high .Reduce cutting speed
' Head downstroke too fast .Reduce head downstroke
speed
' Cutting pressure too high .Check and set to correct
pressure
' Tooth pitch unsuitable .Teeth too close together:
change the blade for one
with coarser tooth spacings
' Workpiece not clamped
properly
.The blade may break if the
workpiece moves during cut-
ting: check the vice, jaws and
clamping pressure.
' Widia inserts positioned in-
correctly
.Adjust inserts position, es-
pecially the width, since
blade thickness can exceed
the manufacturer’s declared
tolerance ratings
' Widia blade steady buttons .Can have a milling action on
the back of the blade if worn
or chipped, causing cracks
from the back towards the
teeth.
' Position of blade on fly-
wheels incorrect
.The blade may be scraping
on the edges of the fly-
wheels: this problem is gen-
erally caused by blades
which are deformed or
wrongly welded (conical) Ad-
just the position of the front
flywheel by moving the pin,
or change the blade
' Blade tension incorrect .If the blade tension is too
high or too low, the blade will
be subjected to abnormal
stress: set the tension back
to the rated value.
' Blade weld fault .The point at which a blade is
welded is its most critical
point; problems could be
caused by welds which are
not aligned perfectly or have
inclusions or blowholes
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