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18
Check to ensure there are no parts of the flat-head screws
raised above the vertical table work surface. Edges of the screws protruding
above the work surface could damage workpieces or cause irregular cuts.
BLADE GUIDE BEARING ADJUSTMENT
The proper alignment of the blade guide bearings is the most important adjustment
on the metal cutting band saw. The blade guide bearings are adjusted and tested
before the band saw leaves the factory. The need for further adjustment will be
unnecessary if the band saw is used and maintained properly. Should the blade
guide bearing get out of adjustment, it is important they be re-adjusted immediate-
ly. If the blade guide bearings are out of adjustment, the blade will not cut straight.
If the problem is not immediately corrected, damage to the blade will occur.
Blade guide bearing adjustment is a critical adjustment to
the metal cutting band saw. Before attempting to correct the blade guide bear-
ing adjustment, try installing a new band saw blade. This could correct the poor
performance. If a new blade becomes dull on one side sooner than the other, it
will start cutting crooked. Simply changing the blade should correct this prob-
lem whereas the more difficult blade guide bearing adjustment will not.
If a new blade does not correct the cutting
problem, check the blade guides for
proper spacing. See Figure 6.
1. Ensure there is 0.001" clearance
between the 0.025" blade thickness and
the guide bearings.
2. The inner guide bearing is fixed and
cannot be adjusted.
3. The outer guide bearing is mounted to
an eccentric bolt and can be adjusted.
4. Loosen the nut while holding the bolt
with a wrench.
5. Position the eccentric bolt by turning it
to the desired clearance. Check this
clearance with a thickness gauge.
6. Securely tighten the nut.
7. Repeat steps 4 through 6 to adjust the
second blade guide bearing.
8. The back edge of the band saw blade should
just barely touch the guide bearing.
BLADE GUIDE ASSEMBLY ADJUSTMENT
The metal cutting band saw is equipped with two adjustable blade guide assemblies
permitting the adjustment of blade guide position for various widths of workpieces.
To ensure the most accurate cut and prolonging the life of the blade, the blade guide
assemblies should be adjusted to just clear the workpiece being cut.
1. Place the workpiece in the
vise and securely clamp in
place.
2. Adjust the catch blade guide
assembly by loosening the
hand knobs and positioning
the guides as needed.
3. Securely tighten the hand
knobs.
BLADE TENSION ADJUSTMENT
In order for the metal cutting band saw to cut effectively, the proper tension must
be put on the blade. If the tension is too loose, the blade may bind and possibly
break. If the blade tension is too tight, the blade could damage to the blade guide
bearings and possibly break.
DO NOT connect the band saw to the AC power source until
tool is completely assembled and adjusted per instructions in this manual.
FIGURE 6.
ADJUSTING THE BLADE
GUIDE BEARING
FIGURE 7.
ADJUSTING THE BLADE
GUIDE ASSEMBLY