Grizzly G0554 - Manual (Page 26)

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G0554 Gear-Head Floor Lathe
Four-Jaw Direct
Mount Independent
Chuck
Four-jaw chucks feature hardened steel jaws that
are adjusted independently. Each jaw can be
removed from the chuck body and be reversed.
Independent jaw adjustment and reversal allows
for a wide range of work holding versatility.
The four-jaw direct mount independent chuck fea-
tured in these instructions mounts the same way
as the three-jaw chuck. Refer to the three-jaw
chuck instructions beginning on
Page 20.
To load a workpiece, do these steps:
1. Using the chuck key, open each jaw so the
workpiece will lay flat against the chuck
face.
2. Support the workpiece.
3. Lock the tailstock and then turn the tailstock
quill so the dead center makes contact with
the centerpoint of your workpiece.
4. Turn each jaw until it just makes contact with
the workpiece.
5. Tighten each jaw in small increments. After
you have adjusted the first jaw, contin-
ue tightening in opposing sequence (see
Figures 25 & 26). Check frequently to make
sure you have not wandered off your center
point due to applying too much pressure to a
single jaw.
PINCH HAZARD! Protect
your hands and precision
ground bedways with
plywood when removing
lathe chuck! The heavy
weight of a falling chuck
can cause serious injury.
Figure 25. Centering workpiece.
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Figure 26. Jaw tightening sequence.
6. 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 (see
Figure 27).