Grizzly G0768Z, Manual

Page: 62 / 124

-52-
Model G0768/G0769 (Mfd. Since 6/14)
Primary Threading Configuration
This threading configuration is used for inch and
metric threading. Mesh the A and C, and D and F
gears, as shown in
Figure 72. The A/B and C/D
change gears each share a keyed bushing. A
spacer (E) is installed on the lower shaft in front
of the F gear.
Secondary Threading Configuration
This threading configuration is used for a differ-
ent range of inch threads. Mesh the A, C, and E
gears, as shown in
Figure 73. The A/B, and C/D
gears each share a keyed bushing. The B and D
gears (e.g. 20T or 30T) function as spacers since
they do not mesh with other gears. A spacer (F)
is installed on the lower shaft behind the E gear.
Figure 73. Secondary threading configuration.
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
80 60
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
E Gear
A Gear
B Gear
C Gear
D Gear
F (Spacer)
Figure 72. Primary threading configuration.
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
80 60
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
A Gear
E (Spacer)
F Gear
B Gear
C Gear
D Gear
Configuring End Gears
Follow the example below to understand how
to change the gears from the factory set power
feed configuration to the primary inch threading
configuration. Concepts are similar to those for
setting up gears for power feeding.
Note: Many of the techniques and concepts
explained here also apply to setting up gears for
power feeding.
Tools Needed Qty
Hex Wrench 5mm .........................................1 Ea
Open-End Wrenches 6, 14, 17mm ...............1 Ea
Punch ................................................................ 1
Hammer ............................................................. 1
To configure end gears for 20 TPI:
1. DISCONNECT MACHINE FROM POWER!
2. Locate 20 TPI on thread chart shown in
Figure 74.
3. Gather 53T, 80T, 60T, and 50T gears. (The
80T gear may already be installed.)
4. Remove end gear cover.
Figure 74. Gear positions for 20 TPI on thread
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
20 TPI
Gears and Positions Needed