Spur Center: Installing/Removing; Live Center: Installing/Removing; Live Center And Cone; Spindle Lock - Jet JWL-1640EVS Operating Instructions And Parts Manual

Disengage index pin before
starting lathe.
IMPORTANT: Do not use index pin to lock spindle,
which will cause unnecessary wear to the pin. Use
spindle lock for this purpose.

7.9 Spur center: Installing/removing

The spur center is installed into the headstock
spindle. The center should first be mounted to your
workpiece, and then installed into the spindle. See
section 9.4.
1. Disconnect lathe from power source.
2. Clean tapered end of center, and inside of
headstock spindle, then push center into
headstock spindle.
3. To remove a center, first remove workpiece
from lathe. Insert knockout rod (Figure 7-8)
through hole in handwheel and tap the end of
spur center.
IMPORTANT: Hold the center by either
placing your thumb and forefinger on outside
diameter of spur center, or wrapping the center
with a rag. The center can be damaged if
allowed to fall.
Figure 7-8: removing spur center

7.10 Live center: Installing/removing

Live centers are installed into the tailstock quill.
See Figure 7-9.
1. Disconnect lathe from power source.
2. Clean tapered end of center and inside of
tailstock quill, then push center into quill. Test
the insertion by attempting to pull the center
out of the quill by hand. It should remain
secure within the quill.
3. Always tighten quill locking handle (M), once
the live center has been properly positioned in
workpiece. Make sure keyway (N) in quill is
aligned with locking handle.
To remove a live center:
4. Back off tailstock and remove workpiece from
lathe.
5. Loosen quill lock handle (M).
6. Rotate handwheel counterclockwise to retract
quill all the way, until live center comes out.
Hold the center while doing this to prevent it
from falling.
Figure 7-9: installing live center

7.11 Live center and cone

The live center, shown in Figure 7-10, can be used
without the cone. To remove cone from live center,
first insert pin through hole in live center body as
shown. If pin will not insert at first, rotate cone until
pin can be inserted. The cone can now be removed
by holding the body stationary while unscrewing
cone.
Figure 7-10: removing cone from live center

7.12 Spindle lock

Push spindle lock pin (P, Figure 7-11) and rotate
spindle slightly until pin engages. Slide plate
downward to hold pin in locking position.
Release spindle lock by pushing plate upward.
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