-42-
Model G0768/G0769 (Mfd. Since 8/15)
Mounting Center in Tailstock
To mount a 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.
Removing Center from Tailstock
Note:
The maximum quill travel is 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.
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.
The included #2 dead center or a live center (not
included) 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.
Figure 45. Example of using dead center
installed in the tailstock.
Dead Center
Mounting Workpiece Between
Centers
To avoid premature wear of dead center
or damage to workpiece, use low spindle
speeds and keep tip of dead center mounted
in tailstock well lubricated.
1. DISCONNECT MACHINE 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).
Figure 46. 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 MACHINE FROM POWER!
2. Drill center holes in both ends of workpiece.
3. Install MT#3 dead center in spindle with lathe
dog and chuck or faceplate, then install live
center or MT#2 dead center in tailstock.
4. Lubricate MT#2 dead center point and
workpiece center holes, then mount workpiece
between centers and hold it in place with light
pressure from tailstock center.
