Four-Way Tool post
the four-way tool post is mounted on top of the
compound slide, and allows a maximum of four
tools to be loaded simultaneously.
the four-way tool post allows for quick indexing to
new tools. this is accomplished by loosening the
top handle, rotating the tool post to the desired
position, then re-tightening the handle to lock the
tool into position.
4-Way tool post Wrench ................................... 1
To load the tool post:
Choose the desired cutting tool.
loosen the tool post bolts so that the cutting
tool can fit underneath the tool post bolts.
if necessary, place shims underneath the
cutting tool so that the cutting tip is properly
aligned with the workpiece.
use a minimum of two tool post bolts to
secure the cutting tool and tighten firmly (see
tool post Bolts
Figure 50. tool holder and tool post.
repeat Steps 1-4 for the three remaining
openings, as needed.
to set the correct spindle speed for your opera-
tion, you will need to: 1) Calculate the spindle
speed (rpM) needed for your operation, and 2)
configure the spindle speed levers for the calcu-
ALWAyS make sure the spindle is turned
OFF and is at a complete stop before
changing any gear configuration to prevent
damage to the lathe gearing and voiding the
calculating Spindle Speed
Brass & Bronze
Cast Iron (Soft)
Cast Iron (Hard)
Alloy Steels (Hard)
Hi Maganese Steel
Note: These values are based on HSS cutting
tools. For carbide cutting tools, double the aver-
age speed. These values are a guideline only.
Refer to the MACHINERY'S HANDBOOK for
more detailed information.
use the table in Figure 51 to determine the
recommended cutting speed for the workpiece
Note: Cutting speeds are expressed in SFM
(surface feet per minute) that the workpiece
moves against the cutter, which is different
from the spindle speed (RPM).
Recommended Cutting Speeds
Average Tool Speed (sfm)
Figure 51. Cutting speed table.
Model g0554z (Mfg 01/09+)