Model G4003 (Mfd. Since 6/20)
-31-
Figure 35. Finished dead center.
Tailstock
The tailstock on the Model G4003 is aligned at
the factory with the headstock. It is recommended
that you take the time to ensure that the tailstock
is aligned to your own desired tolerances.
To align the tailstock:
1.
Center drill a 6'' long piece of bar stock on
both ends. Set it aside for use in step 4.
2.
Make a dead center by turning a shoulder
to make a shank. Flip the piece over in the
chuck and turn a 60° point. See Figure 35.
As long as it remains in the chuck, the point
of your center will be accurate to your spin-
dle’s axis. Keep in mind that the point will
have to be refinished whenever it is removed
and returned to the chuck.
Figure 36. Bar stock mounted on centers.
3. Place the live center in your tailstock.
4. Attach a lathe dog to the bar stock and mount
it between the centers. See Figure 36.
5.
Turn approximately .010" off the diameter.
6. Measure the stock with a micrometer. If the
stock is fat at the tailstock end, the tailstock
needs to be moved toward you the amount of
the taper. See Figure 37.
TIP
Before making adjustments to the tailstock,
mount a dial indicator so that the dial’s plunger
is on the tailstock barrel. See Figure 37.
Figure 37. Adjusting for headstock end taper.
Viewed from above.
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