Four-Jaw Chuck - Grizzly G0602 Owner's Manual

Four-Jaw Chuck

To install the four-jaw chuck:
Refer to the Mounting Chuck or Faceplate
procedures on Page 16 to mount the four-jaw
chuck.
To load a workpiece in the four-jaw chuck:
1.
DISCONNECT POWER TO THE LATHE!
2.
Using the chuck key, open each jaw so the
workpiece will lay flat against the chuck
face.
3. Support the workpiece.
4. Lock the tailstock, then turn the tailstock quill
so the dead center makes contact or is close
to the center point of your workpiece (see
Figure 13).
Figure 13. Rough centering procedure with a
typical 4-jaw chuck, using the dead center and
the tailstock.
-18-
5. Turn each jaw until it just makes contact with
the workpiece.
6.
In an opposite pattern, tighten each jaw in
small increments. After you have adjusted
the first jaw, continue tightening the opposing
jaw. Frequently check the dead center align-
ment to make sure you have not wandered
off your index point due to applying too much
pressure to a single jaw.
7.
After the workpiece is held in place, back the
tailstock away and rotate the chuck by hand.
The center point will move if the workpiece is
out of center.
8.
Make fine adjustments by slightly loosening
one jaw and tightening the opposing jaw until
the workpiece is precisely aligned. Use a
dial indicator for fine tuning adjustments into
alignment (see Figure 14).
Figure 14. Exact centering procedure with a
typical 4-jaw chuck using a dial indicator.
Use a lower RPM when machin-
ing heavy eccentric workpieces;
securely clamp your workpiece
and remove the chuck key!
Objects thrown from a lathe can
cause serious injury or death to
the operator or bystanders.
G0602 10" X 22" Benchtop Lathe