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M1109 Combo Lathe/Mill
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The three-jaw scroll chuck has removable hardened steel
jaws (
Figure 17
). The outside of the jaws are used to
hold the workpiece from the outer diameter.
Numbered from 1–3, the jaws must be used in the match-
ing numbered jaw guides, see
Figure
18
.
Note:
The chuck need not be removed from the spindle to
swap the jaws.
To remove a set of jaws, do these steps:
1.
DISCONNECT POWER TO THE LATHE/MILL!
2
. Place a piece of wood over the ways to protect them
from potential damage.
3
. Turn the chuck key counterclockwise and back the
jaws out.
4
. Clean the jaw mating surfaces and apply a film of
white lithium grease to the mating surfaces.
5
. Set the old jaws aside in a safe place free of mois-
ture and abrasives.
6.
Rotate the chuck key clockwise until you see the tip
of the scroll-gear lead thread just begin to enter jaw
guide #1 (see
Figure 19
).
7.
Insert jaw #1 into jaw guide #1 and hold the jaw
against the scroll gear.
8.
Rotate the chuck key clockwise one turn to engage
the tip of the scroll-gear lead thread into the jaw.
Pull on the jaw now and it should be locked into the
jaw guide.
9
. Repeat the steps on the remaining jaws.
• If installed correctly, all three jaws will converge
together at the center of the chuck.
• If the jaws do not come together, repeat this pro-
cedure until they do.
Replacing Jaws
Figure 17.
Chuck and jaw selection.
Figure 18.
Jaw guide number.
Figure 19.
Lead thread on scroll gear.
Jaw Guide #1
Lead Thread
Jaw Numbers
Содержание M1109
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Страница 31: ... 29 M1109 Combo Lathe Mill OPERATIONS Change Gear Chart ...
Страница 52: ... 50 M1109 Combo Lathe Mill PARTS Compound Rest and Tool Post Diagram 2500 Series Parts ...
Страница 56: ... 54 M1109 Combo Lathe Mill PARTS Steady Rest and Follow Rest Diagram 3500 Series Parts ...
Страница 69: ... 67 M1109 Combo Lathe Mill PARTS Notes ...
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