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Model G0773 (Mfd. Since 12/14)
-37-
Mounting Center in Tailstock Removing Center from Tailstock
To remove the center from the quill, hold onto it
with a gloved hand or shop rag, then rotate the
quill handwheel counterclockwise to draw the quill
back into the casting until the center releases.
If the center does not come loose by retracting the
quill, extend the quill to expose the slot shown in
the Figure below, then use a drift key to remove
the center.
To mount center in tailstock:
1.
DISCONNECT MACHINE FROM POWER!
2.
Thoroughly clean and dry tapered mating
surfaces of tailstock quill bore and center,
making sure no lint or oil remains on tapers.
Note: The maximum quill travel is 3.2", but
we do not recommend extending the quill
more than 1" or stability and accuracy will be
reduced.
3. Use quill handwheel to feed quill out from
casting approximately 1".
4. Insert center into tailstock quill.
5.
Seat center firmly into quill during workpiece
installation by rotating quill handwheel clock-
wise to apply pressure with center engaged
in center hole of workpiece.
Note: Only apply enough pressure with
tailstock quill to securely mount workpiece
between centers. Avoid overtightening cen-
ter against workpiece, or it may become
difficult to remove later, and it will result in
excessive friction and heat, which may dam-
age workpiece and center.
Figure 42. Example of using dead center
installed in the tailstock.
Dead Center
Mounting Workpiece Between
Centers
Figure 43. Example photo of a workpiece
mounted between two centers.
Note: Only apply enough pressure to securely
mount the workpiece between centers. Avoid
over-tightening the center against the workpiece,
or it may become difficult to remove later. Also,
over-tightening will result in excessive friction and
heat, which may damage the workpiece or center.
1. DISCONNECT LATHE FROM POWER!
2.
Drill center holes in both ends of workpiece.
3.
Install dead center in spindle with lathe dog
and chuck, faceplate or drive plate, then
install live center or carbide-tipped dead cen-
ter in tailstock.
4.
Lubricate dead center point and workpiece
center holes, then mount workpiece between
centers and hold it in place with light pressure
from tailstock center.
5.
Seat center firmly into quill by rotating quill
handwheel clockwise to apply pressure
against workpiece (see example below).
Either a carbide-tipped dead center or live center
can be used in the tailstock. Mounting instructions
are the same for both. The
Figure below
shows
an example photo of a dead center mounted in a
tailstock.