Centers; Dead Centers; Mounting Dead Center In Spindle; Removing Center From Spindle - Grizzly G0768Z Manual

8" x 16" variable speed lathe with dro
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Centers

Figure 43 shows the MT#2 and MT#3 dead cen-
ters included with the lathe.
MT#2 Dead
Center
Figure 43. Dead centers.

Dead Centers

Dead centers are one-piece, high-speed steel
centers that require low spindle speeds and a
small amount of oil to reduce friction heat that may
damage the workpiece.
Mount the MT#2 dead center (see Figure 43)
in the tailstock. Since the workpiece will rotate
against the center and generate friction, the tip of
the center must be lubricated to avoid premature
wear and maximize smooth operation.
Mount the MT#3 dead center (see Figure 43) in
the spindle for operations where the workpiece
rotates with the center and does not generate
friction.
Model G0768/G0769 (Mfd. Since 8/15)

Mounting Dead Center in Spindle

1.
2.
3.
4.
MT#3 Dead
Center

Removing Center from Spindle

To remove the center from the spindle, insert a
piece of round bar stock (or similar tool) through
the outside end of the spindle. Hold onto the cen-
ter with a gloved hand or shop rag, then tap the
bar stock to knock the center loose.
DISCONNECT MACHINE FROM POWER!
Thoroughly clean and dry all mating surfaces
of spindle bore and center, making sure that
no lint or oil remains on these surfaces.
Mount chuck or faceplate onto spindle, which-
ever is correct for your operation.
Insert MT#3 center into spindle bore through
chuck or faceplate.
Below is 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 44. Example of using a dead center with
a faceplate and lathe dog.
-41-

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