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G9744Z Metal Cutting Bandsaw
-33-
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Machine is loud when
cutting or bogs down in
the cut.
1. Excessive feed rate.
2. T
he blade TPI is too great, or the
material is too coarse.
1. Refer to Feed Rate on Page 24, or Blade Speed
o
n Page 24 and adjust as required.
2. Re
fer to Blade Selection on Page 23 and adjust as
required.
Blades break often. 1. Blade is not tensioned correctly.
2. T
he workpiece is loose in the vise.
3. T
he feed or cut speed is wrong.
4. T
he blade TPI is too great, or the
material is too coarse.
5. T
he blade is rubbing on the wheel
flange.
6. T
he bandsaw is being started with
the blade resting on the workpiece.
7. T
he guide bearings are
misaligned, too tight, or the blade
is rubbing on the wheel flange.
8. T
he blade is too thick, or the
blades are of low quality.
1. Check to see that blade is not excessively tight or
too loose.
2. C
lamp the workpiece tighter, or use a jig to hold the
workpiece.
3. Re
fer to Feed Rate on Page 24, or Blade Speed
on Page 24 and adjust as required.
4. Re
fer to Blade Selection on Page 23, and adjust
as required.
5. Re
fer to Blade Tracking on Page 36, and adjust as
required.
6. S
tart bandsaw and then slowly lower the headstock
by setting the feed rate.
7. Re
fer to Blade Tracking on Page 36, or Blade
Guide Arms on Page 22, and adjust as required.
8. U
se a higher quality blade.
Blade dulls prematurely. 1. T
he cutting speed is too fast.
2. T
he blade TPI is too coarse.
3. T
he blade feed pressure is too
light.
4. T
he workpiece has hard spots,
welds, or scale is on the material.
5. T
he blade is twisted.
6. T
he blade is slipping on the
wheels.
1. Re
fer to Blade Speed on Page 24 and adjust as
required.
2. Re
fer to Blade Selection on Page 23, and adjust
as required.
3. Re
fer to Feed Rate on Page 24, and adjust as
required.
4. I
ncrease the feed pressure, and reduce the cutting
speed.
5. Re
place the blade.
6. Re
fer to Blade Tension on Page 35, and adjust as
required.
Blade wears on one side. 1. T
he blade guides are worn or mis-
adjusted.
2. T
he blade guide slide bracket is
loose.
3. T
he wheels are out of alignment.
1. Re
fer to Blade Guides on Page 22 and replace or
adjust.
2. T
ighten the blade guide bracket.
3. Re
fer to Blade Tracking on Page 36, and adjust as
required.
Teeth are ripping from the
blade.
1. The
feed pressure is too heavy
and the blade speed is too slow; or
the blade TPI is too coarse for the
workpiece.
2. The
workpiece is vibrating in the
vise.
3. The
blade gullets are loading up
with chips.
1. Re
fer to Blade Selection on Page 23 and decrease
the feed pressure. Refer to Feed Rate on Page 24,
a
nd adjust as required.
2. Re
-clamp the workpiece in the vise, and use a jig if
required.
3. U
se a coarser-tooth blade.
The cuts are crooked. 1. T
he feed pressure is too high.
2. T
he guide bearings are out of
adjustment, or too far away from
the workpiece.
3. T
he blade tension is low.
4. T
he blade is dull.
5. T
he blade speed is wrong.
1. Re
fer to Feed Rate on Page 24, and adjust as
required.
2. Re
fer to Blade Guides on Page 22 and replace or
adjust.
3. Re
fer to Blade Tension on Page 35, and adjust as
required.
4. Re
fer to Blade Change on Page 34 and replace
the blade.
5. Re
fer to Blade Speed on Page 24 and adjust as
required.
Bandsaw Operations