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Model G0768/G0769 (Mfd. Since 8/15)
Power Feed
The carriage has power feed (or automatic feed)
options for threading or non-threading operations.
This section describes how to use the power feed
option for non-threading operations. To learn how
to power the carriage for threading operations,
refer to Threading on Page 58.
Power Feed Controls
Use the following descriptions and figures to
understand the power feed controls.
Before using power feed, you may have to recon-
figure the end gears, depending on how they are
set up (refer to Power Feed Configuration on
Page 52). The lathe comes from the factory with
the end gears set up in the power feed configura-
tion.
A. Spindle Direction Switch: Enables forward
or reverse carriage travel when feed direction
dial and half nut lever are engaged. The car-
riage will not move when the switch is in the
"0" position.
Figure 87. Spindle switch and feed rate chart.
A
B
To avoid damaging lathe, NEVER allow
cutting tool to run into chuck! ALWAYS
make sure spindle is completely stopped
BEFORE using headstock controls to make
changes.
C. Feed Direction Dial: Selects carriage travel
direction without changing direction of head-
stock rotation. The carriage moves left when
feed direction dial is turned right, half nut
lever is engaged, and spindle direction switch
is set to "F".
The carriage moves right when the feed
direction dial is turned to the left. The carriage
will not move when the lever is in the center
position.
Carriage travel direction reverses when the
spindle direction switch is set to "R".
Figure 89. Feed direction dial.
C
B. Feed Rate Chart: Displays end gear settings
for selected feed rate (see Figure 88).
0.0071"
0.0037"
84
20
A
A
40
in/
mm
n/1"
C
C
D
D
B
B
E
E
F
A
C D
B
E F
A
C D
B
E F
F
80 80
0.40
1.25 1.50 1.75 2.00 2.50 3.00
55
80
80
53
71 71 63
57
71 7163 33 3060 40 40
506084805060
20
80 80
80 63 63
80
60 70
70
70
57 72 80
80
30 33 53 30 60 40 40 4030 3370
0.50 0.60 0.70 0.80 1.00
80
30 72
33 80
30
0.0068"
A
C D
B
E F
A
C D
B
E F
30
19 20 22 24 32 40 44
80 80
30 33 40 65 70 80 60
6060 60 63
63
53
9 10 11 12 13 14 16
18
50 50 55
80
80 80 80 80
80 60
60
71 53 55 33 3055 554030
53 53 53 72 63 70
57 57 72 72
7272 80 70 40 40 40
63 5755
Figure 88. Feed chart.