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G4015 Lathe/Mill -13-
Lathe Chuck
The Model G4015Z Lathe/Mill comes equipped
with a 4'' 3-jaw chuck (already installed).
The 3-jaw chuck is a scroll-type chuck, meaning
that all three jaws move in unison when adjust-
ments are made. Most 4-jaw chucks, on the other
hand, feature jaws which are adjusted indepen-
dently. A 4-jaw chuck can be used to hold square
or rectangular stock.
The 3 jaws, on a 3 Jaw Chuck, open and close
using the chuck key provided. Please refer to
Figure 6. Rotating the key clockwise closes the
jaws.
Grizzly offers 4-jaw chucks. Please note that a 5"
adapter plate has been provided for mounting a
4-jaw chuck. Please see Grizzly’s current catalog
for ordering information on 4-jaw chucks.
Figure 5. Place roll pin in hole and tap with hammer.
Figure 6. Rotate chuck key to open/close jaws.
To use this mounting 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 3 screws that were removed from the 3-
jaw chuck.
DO NOT mount chucks measuring larger than 5"
in diameter on this spindle.
Some 4-jaw chucks may not readily mount to the
back plate provided. It may be necessary to drill
new mounting holes and/or resurface and shoul-
der the plate so the chuck may be mounted accu-
rately and safely. Should you have questions
regarding this, please consult your local technical
school, trained expert or other trade resources.