Lathe Chucks With Mounting Plate - Grizzly G9729 Instruction Manual

Lathe Chucks with
Mounting Plate
The Model G9729 Lathe/Mill comes equipped
with a 5'' 3-jaw chuck (already installed).
The 3-jaw chuck is a scroll-type chuck, meaning
that all three jaws move simultaneously when
the chuck key is turned. Most 4-jaw chucks, on
the other hand, feature jaws that are adjusted
independently. A 4-jaw chuck can be used to hold
square or rectangular stock and is used to "dial
in" stock to true axial alignment. Rotate the chuck
key clockwise, closing the jaws (Figure 11).
Figure 11. Rotate chuck key to close jaws.
G9729 Combination Lathe/Mill
Please note that an adapter plate has been pro-
vided for mounting a 4-jaw chuck. Please see
Grizzly's current catalog for ordering information
on 4-jaw chucks.
To use this adaptor plate:
1.
Fasten the plate to the 4-jaw chuck using the
screws provided with the chuck.
2. Fasten the plate to the spindle plate using
the three screws that were removed from the
3-jaw chuck.
DO NOT mount chucks measuring larger than 6"
in diameter on this spindle.
Some 4-jaw chucks may not readily mount to the
back plate provided. It may be necessary to drill
and tap new mounting holes and/or resurface and
shoulder the plate so the chuck can be mounted
accurately and safely. See Replacing Jaws on
Page 23.
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