4-Jaw Chuck - Grizzly G0602Z Owner's Manual

4-Jaw Chuck

Refer to the Chuck Installation (see Page 27)
and Chuck Removal (see Page 28) instructions
to install or remove the 4-jaw chuck.
The 4-jaw chuck features independently adjust-
able hardened steel jaws for holding non-con-
centric or off-center workpieces. Each jaw can
be independently removed from the chuck body
and reversed for a wide range of work holding
versatility.
Because of the dynamic forces involved in
machining a non-concentric or off-center
workpiece, always use a low spindle speed
to reduce risk of the workpiece coming loose
and being thrown from the lathe, which could
cause death or serious personal injury.
Tools Needed:
4-Jaw Chuck Key .............................................. 1
Dial Indicator ..................................................... 1
To mount the workpiece:
1.
DISCONNECT LATHE FROM POWER!
2.
Place a chuck cradle or plywood on the
bedway below the chuck to protect the
bedway surfaces.
3. Use the chuck key to open each jaw so the
workpiece will lay flat against the chuck face,
jaw steps, or into the spindle opening.
4.
With help from another person or a holding
device, position the workpiece so it is cen-
tered in the chuck.
-30-
5.
Tighten each jaw in small increments. After
you have adjusted the first jaw, continue
tightening the remaining jaws in an opposing
sequence, as shown by the sequential order
in Figure 30.
1
4
Figure 30. 4-jaw tightening sequence.
6. After the workpiece is held in place by the
jaws, use a dial indicator to make sure the
workpiece is centered in the chuck.
Qty
— If the workpiece is not correctly centered,
make fine adjustments by slightly loosen-
ing one jaw and tightening the opposing
jaw until the workpiece is correctly posi-
tioned (see Figure 31 for an example).
Figure 31. Generic picture of non-cylindrical
workpiece correctly mounted on the 4-jaw chuck.
Model G0602/G0752 (Mfd. Since 03/17)
3
Workpiece
Center Point
2