Setting Power Feed Rate - Grizzly G0768Z Manual

3. Gather the required A–F change gears: 84T,
30T, 20T and two 80T gears, based upon the
chart in Figure 91.
4.
Remove end cover.
5. Loosen adjuster cap screw shown in Figure
92, and pivot adjuster down to disengage
gears.
Figure 92. Adjustor cap screw location.
6.
Remove hex nuts, e-clips, and flat washers
that secure existing gears.
7.
Replace A/B gear with 84T and 30T gears,
replace C/D gear with 20T and 80T gears,
and install spacer with 80T gear on bottom
shaft (see Figure 93).
0.0037"
A B
84 30 72
C D
20 80
E F
80
F (Spacer)
E Gear
Figure 93. Power feed change gear
configuration.
Model G0768/G0769 (Mfd. Since 8/15)
Adjustor Cap
Screw
A Gear
40
B Gear
0.0068"
30
B
C Gear
33 80
D
80
D Gear F
8. Adjust lash between meshed gears so it is
approximately 0.003", then tighten the gear
shafts.
9. Swing the adjuster up and mesh the 84T gear
with the spindle gear.
10. Secure the adjuster cap screw.
11. Re-install end gear cover. The lathe is now
set for a power feed rate of 0.0037 in./rev.
Threading
The following subsections describe how to use
the threading controls and charts to set up the
lathe for a threading operation. If you are unfamil-
iar with how to cut threads on a lathe, we strongly
recommend that you read books, review industry
trade magazines, or get formal training before
attempting any threading projects.
Headstock Threading Controls
The threading chart on the headstock face dis-
plays the settings for inch and metric threading.
Using the controls on the lathe, follow the exam-
ple below to understand how to set up the lathe
for the desired threading operation.
A
C
E
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