Use and Care Manual

32
Symptom Possible Cause Correction
Blade forms cracks at
base of teeth.
Teeth not suitable for particular job, or
are incorrectly set.
Replace with proper blade for job.
Blade thickness not suitable for band
wheel diameter.
Replace with proper thickness blade.
Blade sharpened incorrectly, becomes
overheated.
Sharpen blade properly or replace.
Band wheels have become misaligned. Contact service representative.
Cracks on back edge
of blade.
Workpiece being fed too quickly.
Reduce feed speed to lessen strain on
the blade.
Welding on blade not perfectly aligned.
Eliminate the welded part, and re-weld
properly; or acquire a new blade. Round
the back edge of a new blade.
Thrust bearing is worn; caused by
constant contact with back of blade.
Replace thrust bearing. Adjust new
bearing according to instructions (sect.
10.6.2).
Blade breaks
prematurely.
Feed force too great. Reduce feed force.
Blade pitch too coarse.
Refer to blade selection chart; use finer
pitch blade.
Support bearing not properly supporting
blade.
Check support bearing for correct
position and signs of wear. Adjust or
replace as needed.
Blade tensioned too tightly. Reduce tension.
Blade breaks close to
weld.
Blade overheated during welding.
Have blade annealed, or eliminate brittle
part and weld correctly.
Blade cooled too rapidly after welding.
Have blade annealed, or eliminate brittle
part and weld correctly.
Premature dulling of
saw teeth.
Blade “pitch” too fine.
Refer to blade selection chart. Use blade
with coarser pitch.
Feed pressure too light. Increase feed pressure.
Cutting rate too low. Increase feed pressure and cutting rate.
Incorrect choice of blade.
Re-examine material. Select proper
blade from the chart.
Chipped tooth or foreign object lodged in
cut.
Stop the saw and remove lodged
particle. Replace blade if damaged.