For Machines Mfg. Since 3/11 | O P E R A T I O N |
Setting Power Feed Rate
The power feed rate chart displays the settings for the headstock feed controls for metric and inch feed rates (see Figure 72).
Feed Rate 
Chart
Figure 72. Power 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 0.0025"/rev
1.Make sure the end gears are in the standard configuration, which is applicable for general feeding operations (refer to End Gears on the Page 58 for detailed instructions).
2.Locate the line in the feed rate chart that lists the setting for 0.0025" of feed per revolution of the spindle, as illustrated in Figure 73.
Note: In the next step, use the chuck key to rock the spindle back and forth to help mesh the gears as you make adjustments.
3.For a power feed rate of 0.0025"/rev., use the configuration string of characters to the left of the selected feed rate (LCT7Y) to configure the controls as follows:
L Move the gearbox range lever on the headstock up to the low position.
C Point the left gearbox lever to “C”.
T Point the middle gearbox lever to “T”.
7Position the bottom gearbox lever in slot “7”.
YPoint the right gearbox lever to “Y”.
The lathe is now set up for a power feed rate of 0.0025" per spindle revolution.
When using power feed to move the cross slide, the feed rate is 1⁄2 the value stated in the feed rate chart.
Feed Rate of
0.0025"/rev.
Requires a
Configuration of
LCT7Y
