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15
10.0 Operation
10.1 Break-in procedure
During manufacturing and testing, this lathe has
been operated in the low RPM range for three
hours.
To allow time for the gears and bearings to break-
in and run smoothly, do not run the lathe above
755 RPM for the first six hours of operation and
use.
10.2 Feed and thread selection
1. Refer to the feed and thread table (A, Figure
10-1; also sect. 12.0 of this manual).
2. Move knobs and handle (B, Figure 10-1) to
appropriate positions.
Figure 10-1
10.3 Change gear replacement
Note: The 30T, 60T, 120T and 127T gears are
installed in the end gear compartment when
delivered from the factory. This combination will
cover most inch feeds and threads under normal
circumstances. The additional gears found in the
toolbox are used for some metric threads and
feeds.
1. Disconnect machine from power source.
2. Open the cover on left end of headstock.
3. Loosen hex nuts (E/F, Figure 10-2). Move
quadrant out of the way.
4. Change gears (G, Figure 10-2) to match feed
and thread chart.
5. Thoroughly clean and install new gears.
6. Move quadrant so the large gear meshes with
the smaller gears, and tighten to secure in
place. Note: Make sure there is backlash of
0.002” – 0.003” between gears. Setting gears
too tight will cause excessive noise and wear.
7. Close cover and connect machine to power
source.
Figure 10-2
10.4 Automatic feed operation and
feed changes
1. Move the forward/reverse selector (A, Figure
10-3) up or down depending on desired
direction.
Figure 10-3
2. Turn knob (B, Figure 10-4) so that the arrow
points at the round circle to start the feed rod
rotating.
Figure 10-4
10.5 Powered carriage travel
Push lever (C, Figure 10-3) down to engage cross
feed. Pull lever up to engage longitudinal feed.
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