-20-
3. Adjust the spindle speed range lever to the range
that covers your calculated spindle speed.
4. Turn the spindle ON and slowly turn the variable
speed dial to carefully adjust the spindle speed to
your calculated spindle speed.
Power Feed
On this machine, both the carriage and cross slide
have power feed capability. The rate that these
components move (feed rate) is controlled by how the
levers are con
fi
gured on the gearbox.
Feed rate and spindle speed must be considered
together. The sources you use to determine the
optimum spindle speed for an operation will also
provide the optimal feed rate to use with that spindle
speed.
Often, the experienced machinist will use the feeds
and speeds given in their reference charts or web
calculators as a starting point, then make minor
adjustments to the feed rate (and sometimes spindle
speed) to achieve the best results.
The carriage can alternately be driven by the
leadscrew for threading operations. However, this
section covers using the power feed option for
the carriage and cross slide components for non-
threading operations.
Power Feed Controls
The feed direction lever controls direction of the
carriage. The quick change feed direction knob
reverses the feed direction of the carriage while the
lathe is running.
Figure 49. Feed control lever positions.
Cross Feed
Neutral
Longitudinal Feed
To engage the power feed :
1. Make sure the spindle is OFF and has come to a
complete stop.
2. Use the feed direction lever to select the direction
that the feed rod will rotate.
3. Use the feed control lever on the front of the apron
to engage power feed for either the carriage or
the cross slide (see Figure 49). To engage the
carriage, push the lever to the left and down. To
engage the cross slide, push the lever to the right
and up.
Feed Direction
Lever
Figure 47. Feed Direction Lever.
Figure 48. Quick change feed direction knob.
To use the quick change feed direction knob :
1. While the lathe is running, place the feed control
lever in neutral.
2. Push or pull the quick change feed direction knob
to change the direction of the feed rod.
3. Re-engage the feed direction lever. The feed
rod rotation will now be reversed, causing the
engaged carriage or cross slide to move in the
opposite direction.
