Grizzly G0492, Owner'S Manual

Page: 19 / 76

G0492 12" X 36" Combo Lathe/Mill
-17-
Mounting the Chuck
and the Faceplate
3 . Use a 14mm wrench and loosen the three
hex bolts that secure the chuck to the spindle
Figure 10.
4
. Support the chuck, and while anticipating the
heavy weight of the chuck, remove the three
hex bolts and then the chuck.
5
. Clean the mating surfaces of the spindle and
the new chuck or faceplate with a clean oiled
rag.
6
. Position the other chuck or faceplate on the
spindle flange, making sure it is fully seated,
and tighten the hex bolts in several alternat-
ing sequences.
Figure 10. Chuck mounting components.
Securely clamp your workpiece
and remove the chuck key!
Thrown objects from a lathe/
mill can cause serious injury
or death to the operator and to
bystanders many feet away.
The three-jaw scroll chuck has hardened steel
jaws that self-center the workpiece within 0.002"-
0.003". An extra set of jaws is included for machin-
ing larger workpieces.
The four-jaw chuck also has hardened steel jaws
but are adjusted independently to hold an off-
center workpiece. Each jaw can be removed from
the chuck body and reversed for special clamping
applications.
The cast-iron faceplate has slots for T-bolts that
hold clamping fixtures. This face plate and after-
market clamping hardware will hold non-cylindri-
cal parts such as castings for many types of turn-
ing operations.
Both chucks and the faceplate are removed and
installed the same way.
To remove and install the chuck or face plate:
1.
DISCONNECT POWER TO THE LATHE/
MILL!
2. Lay a chuck cradle or protective layer of
plywood over the bedways to prevent your
fingers from being pinched and to protect the
precision-ground surfaces (see
Figure 9
).
Figure 9. Simple chuck cradle made of scrap
lumber.
Bed