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Spindle 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 break-in procedure:
1.
Successfully perform all steps in Test Run
section beginning on Page 26.
2.
Set spindle speed to low range (refer to
Spindle Speed, beginning on Page 34 for
detailed instructions).
Note: When operating in low range, spindle
will rotate in reverse when spindle switch is
set to FOR or FWD, and spindle will rotate in
forward when switch is set to reverse.
3.
Run spindle in forward rotation at following
speed for 5 minutes, turn spindle OFF and
allow it to come to a complete stop, then
repeat in reverse rotation.
G0796: 80 RPM
G0797: 60 RPM
-28-
4.
Repeat Step 3 for following speeds, pro-
gressing from lower to higher RPMs:
G0796: 210, 325 RPM
G0797: 250, 400 RPM
5.
Set spindle speed to high range, and repeat
Step 3 for following speeds, progressing from
lower to higher RPMs:
G0796: 660, 1715, 2720 RPM
G0797: 500, 2500, 4000 RPM
Note: Make sure to turn spindle OFF and
allow it to come to a complete stop before
switching direction and before changing
speed.
Congratulations, the spindle break-in is now
complete!
Since the mill head has been moved around
for shipping purposes, you will need to tram
the spindle with the table to ensure a 90°
alignment. Refer to the Tramming Spindle
section on Page 57 for detailed instructions.
Inspections &
Adjustments
The following list of adjustments were performed
at the factory before the machine was shipped:
Gib Adjustments ............................. Page 54
•
•
Leadscrew Backlash
Adjustments .................................... Page 55
Be aware that machine components can shift
during the shipping process. Pay careful atten-
tion to these adjustments during operation of the
machine. If you find that the adjustments are not
set according to the procedures in this manual or
your personal preferences, re-adjust them.
Model G0796/G0797 (Mfd. Since 1/18)
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