Centers - Grizzly G0782 Owner's Manual

Centers

Figure 42 shows the MT#3 dead centers includ-
ed with the lathe. In addition, an MT#5–MT#3
tapered spindle sleeve is included for mounting in
the spindle.
Spindle
Sleeve
Dead
Center
Figure 42. Spindle sleeve and centers.
Dead Centers
A dead center is a one-piece center that, when
mounted in the tailstock, does not rotate with the
workpiece and is used to support long, slender
workpieces.
Use the dead center in the spindle for operations
where the workpiece rotates with the center and
does not generate friction.
The carbide-tipped dead center can better with-
stand the effects of friction and is best used in the
tailstock where the workpiece will rotate against
it. The tip of the center must be generously lubri-
cated during the operation to avoid premature
wear and maximize smooth operation. Using low
spindle speeds will also reduce the heat and wear
from friction.
-38-
Carbide-Tipped
Dead Center
Mounting Dead Center in Spindle
1. DISCONNECT MACHINE FROM POWER!
2.
Thoroughly clean and dry all threads and
mating surfaces of spindle bore and center,
making sure that no lint or oil remains on
these surfaces.
Note: This will prevent the tapered surfaces
from seizing due to operational pressures,
which could make it very difficult to remove
the center.
3.
Mount chuck or faceplate onto spindle, which-
ever is correct for your operation.
4. Insert center into tapered spindle sleeve,
then insert center into spindle bore.
The Figure below shows an example photo
of a dead center installed in spindle, using a
lathe dog and faceplate for turning between
centers.
Dead Center
Lathe
Dog
Figure 43. Example of using a dead center with
a faceplate and lathe dog.
Model G0782 (Mfd. Since 10/15)