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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 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 main-
tain the warranty. Failure to do this could
cause rapid wear-and-tear of spindle bear-
ings once they are placed under load.
Lathe Spindle Break-In
1.
Successfully complete Test Run procedure
beginning on Page 27.
2.
Reset Emergency Stop button.
G0769 Only: Set lathe/mill selector switch to
"1" for lathe mode.
3.
Press green ON button.
4.
Rotate spindle speed dial until spindle speed
display shows 50 RPM and run lathe for mini-
mum of 10 minutes.
5.
Without stopping lathe, use spindle speed
dial to run lathe at 1000 and 2000 RPM for
10 minutes each.
Note: If necessary, refer to Setting Spindle
Speed on Page 47 for detailed instructions.
Model G0768/G0769 (Mfd. Since 8/15)
6.
Rotate spindle speed dial all the way coun-
terclockwise, then press Emergency Stop
button.
7.
Set spindle direction switch to "R", then reset
Emergency Stop button.
8.
Press ON button.
9.
Rotate spindle speed dial to 2000 RPM and
run lathe for 10 minutes.
10. Rotate spindle speed dial all the way coun-
terclockwise, then press Emergency Stop
button.
Congratulations! Lathe spindle break-in is com-
plete.
Mill Spindle Break-In (G0769 Only)
1.
Successfully complete Lathe Spindle Break-
In.
2.
Set spindle direction switch to "F".
3.
Set lathe/mill selector switch to "2" for mill
mode.
4.
Rotate high/low gearbox knob to low "L."
5.
Reset Emergency Stop button.
6.
Press ON button.
7.
Rotate spindle speed dial clockwise to 50
RPM and run spindle for a minimum of 10
minutes.
8.
Rotate spindle speed dial all the way counter-
clockwise.
9.
Press Emergency Stop button.
10. Rotate high/low gearbox knob to high "H".
11. Reset Emergency Stop button.
12. Press ON button.
13. Use spindle speed dial to run mill at 1000 and
2000 RPM for 10 minutes each.
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