Grizzly G0808, Owner'S Manual

Page: 27 / 68

Model G0808 (Mfd. Since 11/15)
-25-
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.
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.
Since the drill head may have moved during
the shipping process, you will need to tram
the spindle with the table to ensure a 90°
alignment. Refer to the Tramming Spindle
section, beginning on Page 48 for detailed
instructions.
Inspections &
Adjustments
The following list of adjustments were performed
at the factory before the machine was shipped:
• Gib Adjustments .............................
Page 46
• Leadscrew Backlash
Adjustments .....................................
Page 47
• Tramming Spindle .......................... Page 48
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.
To perform spindle break-in procedure:
1. Set spindle speed range lever to low and
rotate spindle speed dial to "0" (see Page 4).
2. Slowly rotate spindle speed dial to "1" and
run spindle for 10 minutes, then turn machine
OFF.
3. Reverse spindle rotation direction, then run
spindle at same speed for another 10 min-
utes, then turn machine
OFF.
4. Repeat Steps 2–3 with spindle speed dial set
to "4" and "8" for 5 minutes in each direction.
5. Set spindle speed range lever to high, then
repeat Steps 2–4 at 5 minutes each.
Congratulations, the Spindle Break-In is
now complete!