-56-
Model G0768/G0769 (Mfd. Since 8/15)
To avoid potential carriage/chuck crash,
disengage half nut lever immediately after
completing power feed operations.
D. Half Nut Lever: Engages/disengages half
nut for power feed operations.
Figure 90. Half nut lever.
D
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
Follow the example below to better understand
how to set the lathe power feed.
Tools Needed:
Hex Wrenches 4, 5mm .................................1 Ea
Open-End Wrenches 13, 14mm ...................1 Ea
To set power feed rate to 0.0037 in/rev.:
1. DISCONNECT MACHINE FROM POWER!
2. Locate the 0.0037 in./rev. column heading on
the feed rate chart, as shown in
Figure 91.
Setting Power Feed Rate
Figure 91. Change gears for 0.0037 in./rev. on
feed chart.
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
7163
57
71
71
63
33 3060 40
40
50
60
84
80
50
60
20
80
80
80
63
63
80
60
70
70
70
57
72
80
80
30
33 53 30 60 40 40
40
30
33
70
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
60
60
60
63
63
53
9 10 11 12 13 14 16 18
50
50
55
80
80
80
80
80
8060
60
7153 55
33
30
55
55
4030
53
53
53 72
63
70
57
57 72
72
72
72 80
70 40
40
40
63
57
55
0.0037 in./rev.
Change
Gears
B. Feed Rate Chart: Displays end gear settings
for selected feed rate (see
Figure 88).
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
7163
57
71
71
63
33 3060 40
40
50
60
84
80
50
60
20
80
80
80
63
63
80
60
70
70
70
57
72
80
80
30
33 53 30 60 40 40
40
30
33
70
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
60
60
60
63
63
53
9 10 11 12 13 14 16 18
50
50
55
80
80
80
80
80
8060
60
7153 55
33
30
55
55
4030
53
53
53 72
63
70
57
57 72
72
72
72 80
70 40
40
40
63
57
55
Figure 88. Feed chart.
