Model G0750GV (Mfd. Since 03/18)
-49-
5. The cross slide is now set up for a power feed
rate of 0.0017 in./rev.
2. Locate applicable change gear on chart—in
this case it is the 60T gear.
3. Install 60T gear in the upper "a" position so it
meshes with 120T gear (refer to
Power Feed
Configuration on this page for details).
4. Position gearbox dials as directed by chart
shown in
Figure 66. Be sure to point top right
dial to "N" to select feed rod and disengage
leadscrew. If necessary, use chuck key to
rock spindle back and forth to help mesh
gears.
Figure 66. Gearbox dials positioned for 0.0017
in./rev.
"N"
0.0017
in./rev.
The end gears must be correctly set up for power
feed, inch, or metric threading operations. Use the
photo below to identify the upper "a" gear, middle
120T/127T change gears, and lower "b" gear,
which are also referenced on the headstock feed
and threading charts.
The following subsections explain how to config-
ure the end gears.
End Gears
Power Feed Configuration
Install either a 60T or 30T gear in the upper "a"
position and mesh it with the 120T gear. Gear
selection depends upon which feed speed is
selected. Install another 60T gear in the bottom
position, and mesh it with the 120T gear.
Figure 67. Change gear identification.
Figure 68. Power feed chart change gears.
120T Gear
60T Gear
Bottom Position
"a"
Position
Upper "a"
Gear
127T
Change
Gear
120T
Change
Gear
Lower "b" Gear
