Grizzly G0776 - Section 4: Operation - 4-Jaw Chuck and Faceplate Use; 4-Jaw Chuck Workpiece Tightening and Centering; Faceplate Workpiece Mounting

Model G0776 (Mfd. Since 7/14)
-35-
Figure 33. 4-jaw chuck tightening sequence.
1
2
3
4
Workpiece
Center Point
Figure 34. Example of a non-cylindrical
workpiece mounted on a 4-jaw chuck.
5. Tighten each jaw in small increments. After
tightening first jaw, continue tightening
remaining jaws in an opposing sequence,
similar to sequential order shown below.
6. After workpiece is secured by jaws, use dial
indicator to make sure workpiece is centered
in chuck.
— If workpiece is not correctly centered,
make fine adjustments by slightly loosening
one jaw and tightening opposing jaw until
workpiece is correctly positioned (see
below for an example).
Faceplate
Refer to the prior Chuck Installation and Chuck
Removal subsections for instructions on installing
or removing the faceplate.
The faceplate included with your lathe can be
used for a wide range of operations, including
machining non-concentric workpieces, straight
turning between centers, off-center turning, and
boring.
The tools needed for mounting a workpiece will
vary depending on the type of setup you have.
Machining non-concentric workpieces at
high speeds could cause workpiece to be
thrown from lathe with deadly force. To
reduce this risk, use a low RPM, and use
counter-weights to balance faceplate or
workpiece.
Failure to properly secure workpiece to
faceplate could cause workpiece to be
thrown from lathe with deadly force. To
reduce this risk, use a minimum of THREE
independent clamping devices to hold
workpiece onto faceplate.