Grizzly G0509 - Manual (Page 35)

G0509 & G0509G 16" x 40" Lathe
-33-
centers
A tailstock center supports stock that is too long
to be supported by the chuck alone. the tailstock
barrel and dead center have an Mt#4 taper.
included with this lathe is an Mt#4 to Mt#6 spin-
dle adapter sleeve. if you need to install a center
in the spindle when using the face plate, you can
do so by using this adapter sleeve.
Before installing a center or arbor, make sure that
the mating surfaces are perfectly clean. these
parts will last longer and remain accurate if prop-
erly maintained. if oil is present on the mating
surfaces, the tapers will not interlock.
to install the center, insert the end of it into the
tailstock bore until it seats. once the workpiece
is installed, the force of a mounted workpiece will
fully seat the taper.
When using a dead center ( figure 33), the
tailstock barrel should protrude about 1 ⁄
2
" and not
more than 2 3 ⁄
4
" as indicated by the scale on the
barrel.
to remove the dead center, back the tailstock
barrel all the way into the tailstock casting. the
dead center will pop out. Be sure to catch it when
it comes out to avoid damaging the tip.
figure 33. dead center installed in tailstock.
tailstock controls
the tailstock ( figure 32) serves many func-
tions. the primary use is holding centers and drill
chucks. the barrel has an Mt#4 (morse taper #4)
bore and is imprinted with graduations in millime-
ters and inches.
figure 32. tailstock controls.
tailstock handwheel
turning the handwheel advances or retracts the
barrel in the tailstock. the graduated dial on the
handwheel is adjustable.
barrel lock lever
this lever locks the tailstock barrel in place.
side lock lever & torque
tightening (g0509g)
this removable lever locks the tailstock in place
on the lathe bed. the socket that it fits into will
accept a
1 ⁄
2
-inch drive torque wrench.
to repeat very accurate vertical alignment posi-
tioning, tighten the tailstock here with an inch-
pound torque wrench. if you must, you can use a
foot-pound torque wrench but do not exceed 40
lbs/ft of torque or you may damage the ways and
the tailstock. When tightening the tailstock down
to the maximum torque of 40 lbs/ft, the center
point will be drawn down approximately 0.006"
from the normal centerline when the tailstock is
resting free on the ways.
side lock lever
Barrel lock
lever
tailstock
handwheel