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Model M1112 (For Machines Mfd. Since 12/20)
O
PE
R
ATIO
NS
Mounting Chuck or
Faceplate
The Model M1112 is shipped with the 3-jaw chuck
installed. This is a scroll-type chuck, meaning that all
three jaws move in unison when adjusted.
The 4-jaw chuck, on the other hand, features
independent jaws. This chuck is used for square or
unevenly-shaped stock.
If either chuck cannot hold your workpiece, the cast-
iron faceplate has slots for T-bolts that hold standard or
custom clamping hardware. With the correct clamping
hardware, this faceplate will hold non-cylindrical parts
such as castings.
The chucks and faceplate have a D-5 Camlock mount.
Please note that there are lines stamped into the cam
and on the chuck body (
Figure
24). A chuck key is used
to turn the locking cams.
To remove the existing chuck, do these steps:
1.
DISCONNECT LATHE FROM POWER!
2.
Place a piece of plywood across the lathe ways and
position it just under the chuck. The board should be
at least 8" wide and 10" long.
3.
Turn a cam with the chuck key until the cam line
aligns with the spindle line mark shown in
Figure
24
.
4.
Turn the other cams in the same way. Make sure to
support the chuck with one hand as you align the last
cam. The chuck may come off at this point, so be
ready to support its weight.
5.
Remove the chuck key.
— If the chuck is still tight on the spindle, tap the
back of the chuck with a rubber or wood mallet
while supporting the bottom of the chuck with a
chuck cradle.
— If the chuck does not immediately come off, rotate
the spindle approximately 60˚ and tap again. Make
sure all the marks on the cams and spindle are in
proper alignment.
PINCH HAZARD! Protect your hands
and precision ground bedways
with plywood when removing lathe
chuck! The heavy weight of a fall-
ing chuck can cause serious injury.
Figure
23.
Simple chuck cradle made of
scrap lumber.
Figure
24
.
Cam lines aligned to spindle
line.
Spindle Line
Cam
Line
V's