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Grizzly G0554Z Owner's Manual: Threading Controls

14" x 40" gear-head floor lathe.
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Threading controls

the purpose of this subsection is to orient you
with the controls used when threading and how to
use the threading dial.
if you are unfamiliar with threading on a lathe, we
strongly recommend that you read books, review
industry trade magazines, or get formal training
before beginning any threading projects.
power Feed Lever
the power feed lever must be in the disengaged
(horizontal) position for threading operations or
the half-nut will not engage with the leadscrew
(see Figure 63).
power Feed lever
horizontal &
Figure 63. Carriage controls set up for
Half-Nut Lever
the half-nut lever engages the carriage with the
leadscrew which moves the cutting tool along the
length of the workpiece (see Figure 63).
half-nut lever
down & Engaged
Thread Dial & chart
the numbers on the thread dial are used with
the thread dial chart to show when to engage the
half-nut during inch threading. the thread dial
gear must be engaged with the leadscrew for this
to work. loosen the cap screw that secures the
thread dial, then pivot it so that the dial gear mesh-
es with the leadscrew, as shown in Figure 64.
Cap screw
Figure 64. thread dial engaged with the
DO NOT engage the half-nut when the
spindle speed is over 325 RpM. Otherwise,
damage to the half-nut, leadscrew, or car-
riage components may occur.
Model g0554z (Mfg 01/09+)
dial gear


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  • teddy martin Feb 06, 2017 03:25:
    where can I get one of these carriage stops at g4003