Southbend South Bend 16 SPEED GEARHEAD LATHE SB1053 - Manual (Page 57)

For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe
-55-
O P E R A T I O N
Feed Direction Knob: Changes power feed
direction (see Figure 80).
The advantage of this knob is that you can
quickly reverse power feed direction while the
spindle is rotating—without having to turn the
lathe off, wait until the spindle is stopped, then
use the feed direction lever on the headstock.
Depending on the combined configuration
of the feed direction lever on the headstock
and the feed direction knob on the apron,
the actual direction of power feed may be
different from the printed indicators on the
machine!
Setting Feed Rate
The feed rate chart displays the settings for the
headstock feed controls for metric and inch feed
rates (see Figure 81).
Figure 81. Power feed rate chart.
Feed Rate
Chart
Using the controls on the lathe, follow along with
the example below to better understand how to
set the lathe for the desired power feed rate.
Example: Power Feed Rate of 0.18mm/rev
1. Make sure the end gears are in the standard
configuration, which is applicable for general
feed operations (refer to End Gears on the
Page 56 for detailed instructions).
2. Locate the line in the feed rate chart that
lists the setting for 0.18mm of feed per
revolution of the spindle, as illustrated in
Figure 82.
.050 LCT1W .002
.055 LCT2W .0022
.065 LCT4W .003
.085 LCT8W .0033
.10 LCS2W .004
.13 LCS4W .005
.18 LCS8W .007
mm in.
Figure 82. Relationships between feed rate chart and
headstock feed controls.