Offsetting Tailstock - Grizzly G4003G Owner's Manual

Offsetting Tailstock

The tailstock quill can be offset from the spindle
centerline for turning tapers. Offsetting the quill
toward the front of the lathe results in a taper at
the tailstock end. Conversely, offsetting the quill
toward the back of the lathe results in a taper at
the spindle end.
Tools Needed
Hex Wrench 4mm .............................................. 1
To offset the tailstock:
1.
Rotate the adjustment set screws (shown in
Figure 38) in the opposite directions for the
desired offset.
Note: The marks on the offset indicator (see
Figure 38) are arbitrary. For a precise offset,
use a dial indicator to check quill movement
while adjusting the screws.
Adjustment
Set Screw
(1 of 2)
Turn
Turn
CCW
CW
Figure 38. Set screw adjustment in relation to
tailstock movement.
Model G4003G (Mfd. Since 1/15)
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Offset
Indicator
Turn
Turn
CCW
CW
Aligning Tailstock to Spindle
Centerline
This is an essential adjustment that should be ver-
ified or performed each time the tailstock is used
to turn concentric workpieces between centers
or immediately after offsetting the tailstock when
turning a taper. If the tailstock is not aligned with
the spindle centerline when it is supposed to be,
turning results will be inaccurate along the length
of the workpiece.
Items Needed
Hex Wrench 4mm .............................................. 1
Round Stock 2" x 6" .......................................... 2
Precision Level .................................................. 1
To align tailstock to spindle centerline:
1.
Use precision level to make sure bedway is
level from side to side and from front to back.
— If bedway is not level, correct this condition
before continuing with this procedure (refer
to Leveling section in this manual).
2.
Center drill both ends of a piece of round
stock, then set it aside for use in Step 5.
3.
Use another piece of round stock to make a
dead center. Turn it to a 60° point, as illus-
trated below.
Figure 39. Turning a dead center.
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