20
8-in x 13-in Horizontal Cut-Off Bandsaw
17.0 TROUBLESHOOTING
Fault
Probable Cause
Suggested Remedy
Excessive blade breakage
1.
Material loose in vise.
2.
Incorrect speed or feed.
3.
Teeth too coarse for material.
4.
Incorrect blade tension.
5.
Saw blade is in contact with work
piece before the saw is started.
6.
Blade rubs on the wheel flange.
7. Misaligned
guides.
8.
Cracking at weld.
1.
Clamp work securely.
2.
Check Machinist’s Handbook for
speed/feed appropriate for the
material being cut.
3.
Check Machinist’s Handbook for
recommended blade type.
4.
Adjust blade tension to the point
where the blade just does not slip on
the wheel.
5.
Start the motor before placing the
saw on the workpiece.
6.
Adjust blade tracking.
7. Adjust
guides.
8.
Longer annealing cycle.
Premature blade dulling
1.
Blade teeth too coarse.
2.
Blade speed too high.
3.
Inadequate feed pressure.
4.
Hard spots in workpiece or scale on
in workpiece.
5.
Work hardening of material
(especially stainless steel).
6.
Insufficient blade tension.
7.
Operating saw without pressure on
workpiece.
1.
Use a finer tooth blade.
2.
Try a lower blade speed.
3.
Decrease spring tension.
4.
Increase feed pressure (hard spots).
Reduce speed, increase feed
pressure (Scale).
5.
Increase feed pressure by reducing
spring tension.
6.
Increase tension to proper level.
7.
Do not run blade at idle in/on
material.
Bad cuts (crooked)
1.
Workpiece not square with blade.
2.
Feed rate too fast.
3.
Guide bearings not adjusted properly.
4.
Inadequate blade tension.
5.
Span between the two blade guides
too wide.
6. Dull
blade.
7.
Incorrect blade speed.
8.
Blade guide assembly is loose.
9.
Blade guide bearing assembly loose.
10. Blade track too far away from wheel
flanges.
11. Guide bearing worn.
1.
Adjust vise so it is square with the
blade. (Always clamp the workpiece
tightly in the vise.)
2.
Decrease feed rate.
3.
Adjust guide bearing clearance to
0.001 inch (0.002 inch maximum).
4.
Gradually increase blade tension.
5.
Move blade guide bracket closer to
work.
6. Replace
blade.
7.
Check blade speed
(refer to Figure 5).
8.
Tighten blade guide assembly.
9.
Tighten blade guide
bearing assembly.
10. Adjust blade tracking.
11. Replace worn bearing.
