Spindle Bearing Break-In - Grizzly G0619 Owner's Manual

Spindle Bearing
Break-In
You must complete this procedure to main-
tain the warranty. Failure to do this could
cause rapid wear-and-tear of spindle bear-
ings once they are placed under load.
The spindle break-in procedure distributes lubri-
cation throughout the bearings to reduce the risk
of early bearing failure if there are any "dry" spots
or areas where lubrication has settled in the bear-
ings. You must complete this procedure before
placing operational loads on the spindle for the
first time when the machine is new or if it has
been sitting idle for longer than 6 months.
Always start the spindle break-in at the lowest
speed to minimize wear if there are dry spots.
Allow the spindle to run long enough to warm up
and distribute the bearing grease, then incremen-
tally increase spindle speeds and repeat this pro-
cess at each speed until reaching the maximum
spindle speed. Following the break-in procedure
in this progressive manner helps minimize any
potential wear that could occur before lubrication
is fully distributed.
To perform spindle
procedure:
1.
Perform all lubrication procedures highlighted
in Maintenance section.
2.
Make sure there are no obstructions around
or underneath the spindle.
3. Remove the drawbar if there is no arbor or
collet in the spindle.
4. Close the chip guard.
5. Make sure all switchtes are OFF, and con-
nect the mill/drill to the power source.
6. Turn main power switch ON, and push the
START button (see Figure 10) on the control
panel. The spindle will begin to turn at a low
RPM.
Model G0619 (Mfd. Since 7/18)
bearing break-in
Figure 10. Control panel.
+
7. Now push the
reaches approximately 600 RPM, then let it
run for a minimum of 10 minutes.
—If you suspect the mill/drill is not working cor-
rectly, shut the mill/drill OFF, disconnect it
from power, and use the Troubleshooting
table on Page 30 to correct the problem
before proceeding further.
—If the mill/drill is running smoothly, proceed
to Step 8.
8.
Increase the speed to 1000 RPM and let it
run for another 10 minutes.
9.
Increase the speed to 1750 RPM and let it
run for another 10 minutes.
10. Turn the mill/drill OFF.
11. Set the spindle to rotate in the opposite direc-
tion, then start it and let it run at 1750 RPM
for another 10 minutes.
12. Turn the mill/drill OFF.
button until the mill/drill
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