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10. Complete blade change using the Tensioning
Blade procedure below.
11. Re-install wheel cover.
12. Reposition blade guard and left blade guide
bearing assembly.
Tensioning Blade
Proper blade tension is essential to avoid blade
vibration, twist, or slippage on the wheels. A cor-
rectly tensioned blade provides long blade life,
straight cuts, and efficient cutting times.
The three major signs of incorrect blade tension
are: 1) The blade stalls in the cut and slips on the
wheels, 2) the blade frequently breaks, and 3) the
bandsaw does not make straight cuts.
To tension bandsaw blade:
1.
DISCONNECT MACHINE FROM POWER!
2.
Loosen and slide blade guard and blade
guide bearing assemblies (see Figure 18) as
far left as they will go, then secure.
3.
Turn tension knob shown in Figure 18 clock-
wise to tighten blade or counterclockwise to
loosen blade.
Blade
Tension
Knob
Figure 18. Location of left blade guide arm.
4.
Adjust blade tension knob clockwise until
there is no deflection. Do not over tighten.
Model G0885 (Mfd. Since 04/19)
Blade
Guard
Blade Breakage
Many conditions may cause a bandsaw blade to
break. Some of these conditions are unavoidable
and are the natural result of the stresses placed
on the bandsaw; other causes of blade breakage
are avoidable.
The most common causes of avoidable blade
breakage are:
•
Faulty alignment or adjustment of the blade
guides.
•
Feeding blade through the workpiece too
fast.
•
Dull or damaged teeth.
•
Improperly-tensioned blade.
•
Left blade-guide assembly set too high above
the workpiece. Adjust left blade-guide bearing
assembly as close to workpiece as possible.
•
Using a blade with a lumpy or improperly fin-
ished braze or weld.
•
Continuously running motor without cutting
anything.
•
Leaving the blade tensioned when not in use.
•
Using the wrong blade pitch (TPI) for the
workpiece thickness. The general rule of
thumb is to have no fewer than three teeth
in contact with the workpiece when starting a
cut and at all times during cutting.
-19-
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