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Tailstock
The tailstock (see Figure 38) is typically used to
support long workpieces by means of a live or
dead center (refer to Centers on Page 74 in the
following section). It can also be used to hold a
drill or chuck to bore holes in the center of a part.
Custom arbors and tapers can also be cut on your
lathe by using the offset tailstock adjustment.
Also, a torque wrench can be used with the
tailstock for repeating super-accurate vertical
alignment.
Quill Lock
Lever
⁄
" Square Drive
1
2
Lock-Down
Figure 38. Tailstock and quill lock levers in
locked position.
Graduated Dial
Increments ................................................. 0.001"
One Full Revolution ................................... 0.100"
Increments on Quill
Inch ...........................0"–4 " in 0.100" Increments
Positioning Tailstock
1.
Rotate tailstock lock lever clockwise (facing
machine) to unlock tailstock from bedways.
2.
Slide tailstock to desired position by pushing
it along the bedways.
3.
Rotate tailstock lock lever counterclockwise
to lock tailstock against bedways.
Optional: To precisely secure the tailstock, mount
a
⁄
" drive torque wrench in the square drive
1
2
shown in Figure 38, then tighten the tailstock to
40 lbs/ft of torque. The center point will be drawn
down as much as 0.006". Do not exceed the max
torque or damage to ways and tailstock will occur.
Model G0750G (Mfd. Since 5/15)
Tailstock Lock
Lever
Quill Handwheel
Using Quill
1.
Rotate quill lock lever counterclockwise to
loosen quill.
2.
Turn quill handwheel clockwise to move quill
toward spindle or counterclockwise to move it
away from spindle.
3.
Rotate quill lock lever clockwise to secure
quill.
Installing Tooling
This tailstock uses a quill with an MT#3 taper that
has a lock slot in the back of the bore that accepts
tang arbors and drill bits (see the Figures below
for examples).
Solid
Open
Solid
End
End
End
Figure 39. Types of tapered arbors and tooling.
Tang
Figure 40. Example photos of inserting tools
with tangs into the tailstock.
Tang
Screw
End
-35-
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