3-Jaw Chuck - Grizzly G4000 Owner's Manual

Removing a Chuck or faceplate
1.
disConnECt LAthE FroM poWEr!
2.
Lay a piece of plywood on the bedway under-
neath the spindle to protect the precision
ground surfaces.
3. Loosen both set screws, then insert one
chuck bar into the spindle indent to hold the
spindle still (see figure 15).
Note: If removing a chuck, insert the remain-
ing chuck bar into a scroll keyway, as shown
in Figure 15.
Chuck
Bars
set screw
figure 15. Chuck bar positioning.
4.
rotate the chuck or faceplate counterclock-
wise to unthread it from the spindle, then
thoroughly clean and lubricate it.
No list of safety guidelines can be complete.
Every shop environment is different. Always
consider safety first, as it applies to your
individual working conditions. use this and
other machinery with caution and respect.
failure to do so could result in serious per-
sonal injury, damage to equipment, or poor
work results.
Model G4000 (Mfg. Since 8/09)

3-Jaw Chuck

the 3-jaw chuck included with your lathe is a
scrolling-type chuck, which means all three jaws
move equally when the chuck key is turned.
this jaw configuration is used to hold concentric
workpieces that are centered with equal pressure
from all three jaws.
there is also a reverse set of jaws included with
your lathe that accommodate additional workpiece
configurations (see figure 16 for examples). Both
sets of jaws can hold a workpiece on the inside
or outside surface of the jaw. no matter how you
configure the jaws, make sure the workpiece is
firmly secured to the chuck.
Mount or remove the 3-jaw chuck on the spindle,
according the instructions beginning on page 20.
Clamping on an Outside Diameter
Clamping in an Inside Diameter
figure 16. Examples of workpiece holding
configurations.
Tools Needed
3-Jaw Chuck Key .............................................. 1
Mounting Workpiece
1.
disConnECt LAthE FroM poWEr!
2. Lay a piece of plywood on the bedway under-
neath the spindle to protect the precision
ground surfaces.
3.
insert the chuck key into a scroll keyway and
rotate it counterclockwise to open the jaws
until the workpiece sits flat against the chuck
face, evenly on the jaw steps, or fits into the
chuck hole and through the spindle bore.
Qty
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