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Mounting Chuck
on Rotary Table
The chuck will need to be centered each time
it is mounted on the rotary table. This ensures
the highest degree of precision during milling
operations.
Tools Needed:
Dial Indicator w/Magnetic Base ......................... 1
Dead-Blow Hammer .......................................... 1
Open-End Wrench 12mm .................................. 1
To center chuck on rotary table:
1.
Place chuck on rotary table and attach with
(4) M8-1.25 x 40 T-slot bolt assemblies (see
Figure 13).
Figure 13. Mounting chuck to rotary table.
2.
Insert piece of straight round stock into chuck
jaws to act as indexing point (see Figure 14).
T-Bolt
Figure 14. Magnetic base dial indicator placed
next to rotary table.
-12-
Note: Indicator needle should be perpendicu-
lar to rotary table and touching outside edge
of round stock in chuck jaws (see Figure 14).
3.
Position dial indicator with magnetic base
next to rotary table.
4.
Loosen four hex nuts securing chuck T-slot
bolts to rotary table head (see Figure 15).
Make sure there is a little tension on the
T-bolts so chuck cannot shift on its own.
Qty
Figure 15. Loosening hex nuts securing T-slot
5.
Loosen rotary table locks (if engaged) and
rotate handwheel clockwise. Take note of
total runout indicated on dial, and stop at the
low side of measured runout.
6.
Use dead-blow hammer to lightly tap on edge
of chuck opposite from indicator until
indicated runout is corrected.
7.
Repeat Steps 3–6 until runout is adjusted to
your satisfaction.
8.
Tighten all T-slot bolts completely, then
Round
check runout again. If necessary, repeat
Stock
Steps 2–6, then tighten hex huts.
Hex Nut
bolts.
Model T25937 (Mfd. Since 3/16)
⁄
of
1
2
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