Spindle Break-In; Recommended Adjustments - Grizzly G0949G Owner's Manual

Spindle Break-In

Before subjecting the spindle to operational loads,
Before subjecting the spindle to operational loads,
it is essential to complete the break-in process.
it is essential to complete the break-in process.
This helps maximize the life of spindle bearings
This helps maximize the life of spindle bearings
and other precision components by thoroughly
and other precision components by thoroughly
lubricating them before placing them under load.
lubricating them before placing them under load.
After spindle break-in is complete, we recommend
After spindle break-in is complete, we recommend
changing headstock and gearbox oil to remove
changing headstock and gearbox oil to remove
any metal particles or debris that are present from
any metal particles or debris that are present from
the assembly and break-in process.
the assembly and break-in process.
The break-in must be performed in succession
The break-in must be performed in succession
with the Test Run procedure described in this
with the Test Run procedure described in this
manual, as the steps in that procedure prepare
manual, as the steps in that procedure prepare
the lathe controls for the break-in process.
the lathe controls for the break-in process.
DO NOT perform this procedure indepen-
DO NOT perform this procedure indepen-
dently of the Test Run section. The lathe
dently of the Test Run section. The lathe
could be seriously damaged if the controls
could be seriously damaged if the controls
are set differently than instructed in that
are set differently than instructed in that
section.
section.
To perform spindle break-in:
1. Successfully complete Test Run procedure
beginning on Page 25.
2.
Set spindle speed range lever to Low (L)
range, select forward spindle rotation, then
turn machine ON and run spindle at 150 RPM
for 10 minutes.
3.
Stop spindle rotation and wait until spindle
has come to a complete stop.
4. Select reverse spindle rotation and run spin-
dle at 150 RPM for 10 minutes.
5. Repeat Steps 2–4 at 400 RPM for 5 minutes.
6. Set FWD/REV switch to "0".
7. Set spindle speed range lever to High (H).
-28-
8. Run lathe at spindle speeds of 500, 1300,
and 1800 RPM. Run for a minimum of 5 min-
utes at each speed in each direction of rota-
tion.
9.
Press E-Stop button and DISCONNECT
MACHINE FROM POWER!
10. Change headstock and gearbox oil before
operating machine further to ensure full
machine warranty (refer to Lubrication on
Page 59).
Recommended
Adjustments
The following adjustments have been made at the
factory. However, because of the many variables
involved with shipping, we recommend you verify
these adjustments to ensure the best results:
Factory adjustments that should be verified:
• Tailstock Alignment (Page 39).
• Backlash Adjustment (Page 68).
• Gib Adjustment (Page 69).
Model G0949G (Mfd. Since 01/22)