Spindle Break-In - Grizzly G9972Z Owner's Manual

Spindle Break-In

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 any 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.
You must complete this procedure to
maintain the warranty. Failure to do this
could cause rapid wear-and-tear of spindle
bearings once they are placed under load.
-20-
1. DISCONNECT LATHE FROM POWER!
2. Make sure the lathe is properly lubricated
(refer to Lubrication on Page 51 for detailed
instructions).
3.
Configure the spindle belt for the lowest spin-
dle speed (refer to Spindle Speed on Page
39 for detailed instructions).
4. Connect the machine to power, turn the spin-
dle switch to the "R" position to start spindle
rotation in the counterclockwise direction,
then let the lathe run for 10 minutes.
5. Stop the spindle rotation and wait until the
spindle has come to a complete stop.
6.
Start spindle rotation in the opposite clock-
wise direction and let the lathe run for 10
minutes.
7.
Disconnect the machine from power, then
repeat Steps 4–6 for each of the spindle
speeds.
8. Turn the lathe OFF. The spindle break-in is
complete and your lathe is ready for opera-
tion.
Model G9972Z (Mfd. Since 03/20)