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G0640X 17" Wood/Metal Bandsaw
-21-
The support bearings are positioned behind
the blade for support during cutting operations.
Proper adjustment of the support bearings is an
important part of making accurate cuts and also
keeps the blade teeth from coming in contact with
the guide bearings while cutting.
To adjust the support bearings:
1. Make sure the blade is tracking properly and
that it is correctly tensioned.
2. DISCONNECT BANDSAW FROM POWER!
3. Familiarize yourself with the upper support
bearing controls shown in
Figure 24.
NOTICE
Whenever changing a blade or adjusting ten-
sion and tracking, the upper and lower blade
support bearings and blade guide bearings
must be properly adjusted before cutting
operations.
Figure 24. Upper support bearing controls.
Support
Bearing Cap
Screw
Guide Block
Assembly
Cap Screw
Guide Block
Adjustment
Shaft Cap Screw
Adjusting Support
Bearings
—If the support bearing is 90° to the blade,
no adjustment to the guide block rotation is
necessary.
—If the support bearing is not 90° to the
blade, loosen the two guide block assem
-
bly cap screws, rotate the blade guide
assembly side-to-side, until the blade is
90° the face of the support bearing as illus
-
trated in
Figure 25, then tighten the guide
block assembly cap screws and re-adjust
the blade guides.
5. Loosen the support bearing cap screw.
6. Place a 0.016" feeler gauge between the
support bearing and the blade, and position
the bearing 0.016" away from the back of the
blade as illustrated in
Figure 26.
Figure 25. Blade should be perpendicular (90°)
to the face of the support bearing.
0.016''
Figure 26. Blade should be aligned approxi-
mately 0.016" away from the bearing edge.
4. Check that the blade is approximately 90° to
the face of the support bearing as illustrated
in Figure 25 (it is not critical that it be pre-
cisely 90°—just make sure it is close.)