Grizzly G4000 User Manual

Model G4000 (Mfg. Since 8/09)
-25-
Centers
Your Model G4000 lathe includes three centers: 1)
an MT#2 live center, 2) an MT#3 dead center, and
3) an MT#2 dead center, as shown in Figure 25.
The spindle taper is an MT#3 and will only receive
the MT#3 dead center. The tailstock quill can
accommodate both the MT#2 live and dead cen-
ter.
Dead Centers
The MT#2 dead center installed in the tailstock
quill is used to support stock that is too long to be
supported by the chuck alone (see Figure 26 for
an example).
When mounting a long, slender workpiece that
extends more than 2
1
⁄2 times its diameter beyond
the chuck jaws, use a center mounted in the
tailstock to support it.
Since the dead center does not rotate with the
workpiece when used in the tailstock, the tip of
the center must be lubricated with an anti-sieze
lubricant to avoid premature wear and maximize
smooth operation. Also, keep the spindle speeds
low to reduce the heat and wear from friction.
Install a lathe dog when using the MT#3 dead cen-
ter in the spindle (see Figure 27 for an example).
Figure 26. Example of using a dead center
installed in the tailstock.
Dead Center
Figure 27. Example of using a dead center with
a faceplate and lathe dog.
Lathe Dog
Dead Center
When using a center in the spindle to mount
a workpiece, the other end of the workpiece
MUST be supported by a center installed in
the tailstock quill to safely hold the workpiece
in place during operation. Otherwise, the
workpiece will leave the lathe when the
spindle rotates and could cause serious per-
sonal injury or property damage.
Figure 25. The Model G4000 centers.
Live
Center
Dead
Centers

Grizzly G4000 Specifications

General

Brand	Grizzly
Model	G4000
Category	Lathe
Language	English