Dead Center - Grizzly G4015Z Owner's Manual

Dead Center

The dead center is used to support stock which is
too long to be supported by the chuck alone.
Stock protruding more than 2
should be supported by a dead or rolling center.
Figure 8. Dead center installed in tailstock.
D
2 1 ⁄ x D
2
-16-
1
⁄ times its diameter
2
Always use a center
to support the end of
any workpiece that
protrudes out of the
chuck further than
1
2 ⁄ times its own
2
diameter. A work-
piece not supported
this way could bend
suddenly and cause
serious personal
injury.
The tailstock barrel and center have a Morse
Taper #3. Before assembling these, insure that
the mating surfaces are "white glove" clean.
Clean the mating surfaces so they are free of dirt
and oil. These parts will last longer and remain
accurate when properly cleaned before assem-
bly. Morse tapers will not interlock when dirt or oil
are present on the mounting surfaces.
Insert the end of the center into the tailstock bore
until it seats. The force of the center contacting a
mounted workpiece will fully seat the taper when
the handwheel is tightened.
When using a center, the tailstock barrel should
protrude about 1 ⁄ '' and not more than 1
2
the tailstock body. See Figure 8.
To remove the live center, back the tailstock bar-
rel all the way into the tailstock casting by turning
the handwheel, on the end of the tailstock, coun-
terclockwise. The live center will pop out. Be sure
to hold it before it comes out lest it drop on the
lathe bed and damage the tip.
1 ⁄ '' out of
4
G4015 Lathe/Mill