Chuck Installation - Grizzly G9972Z Owner's Manual

Chuck Installation

To ensure accurate work, it is extremely important
to make sure the spindle nose and chuck mating
surfaces are clean. Even a small amount of lint or
debris can affect accuracy.
The chuck is properly installed when it threads
all the way onto the spindle nose (see Figure 14
below) and is seated against the spindle shoulder.
There are two chucks included with the Model
G9972Z: a 3-jaw and 4-jaw. A chuck key has been
included for each.
Figure 14. Spindle nose.
Tools Needed
Hex Wrench 5mm .............................................. 1
Chuck Key (3- or 4-Jaw) .................... As Needed
Spanner Wrench................................................ 1
To install the chuck:
1.
DISCONNECT LATHE FROM POWER!
2. Use an appropriate device to protect the ways
and support the chuck during the installation
process (refer to Installation & Removal
Devices on Page 23).
3.
Thoroughly clean, inspect, deburr, and lightly
oil all threads and mating surfaces.
4. Thread the chuck onto the spindle nose and
hand-tighten it.
-24-
Spindle
Shoulder
Inside
Threads Taper
Qty
5.
Insert spanner wrench and tighten chuck with
chuck key until it is seated snug against the
spindle shoulder as shown in Figure 15.
Note: Overtightening chuck will make remov-
al difficult and could damage threads.
Spanner Wrench
Figure 15. Example of using chuck key and
spanner wrench to tighten chuck onto spindle.
6. Position spindle clamps as shown in Figure
16, then secure with cap screws.
Spindle
Clamp & Cap
Screw
Figure 16. Spindle clamp and cap screw
securing chuck/faceplate to spindle.
Model G9972Z (Mfd. Since 03/20)
Chuck Key