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For Machines Mfg. Since 8/11 Model SB1001 8K
™
Lathe
-25-
OPERATION
Chuck & Faceplate
Mounting
This lathe is shipped with the 3-jaw chuck
installed. This is a D1-3 scroll-type chuck where
all three jaws move in unison when the chuck
key is used.
A 4-jaw chuck generally features independent
jaws, which are used for square or unevenly-
shaped stock, and to mount work that needs to
be adjusted to near zero total indicated runout.
If neither chuck can hold your workpiece, use a
faceplate which has slots for T-bolts that hold
standard or custom clamping hardware. With
the correct clamping hardware, a faceplate offers
a wide range of uses, including machining non-
concentric workpieces, straight turning between
centers, off-center turning, and boring.
See Accessories on Page 46 for available 4-jaw
chuck and faceplate options from South Bend.
This lathe is equipped with a D1-type spindle
nose. This type of spindle uses camlocks that are
adjusted with an 8mm hex wrench to securely
mount a chuck or faceplate with repeatable
precision and ease.
Never use spindle speeds faster than the
chuck RPM rating or the safe limits of your
workpiece. Excessive spindle speeds greatly
increase the risk of the workpiece or chuck
being thrown from the machine with deadly
force!
Chuck Installation
To ensure accurate work, it is extremely
important to make sure the spindle nose and
chuck mating surfaces/tapers are clean. Even
a small amount of lint or debris can affect
accuracy.
The chuck is properly installed when all
camlocks are tight, the spindle and chuck tapers
firmly lock together, and the back of chuck is
firmly seated against the face of the spindle all
the way around—without any gaps.
To install the chuck:
1. DISCONNECT LATHE FROM POWER!
2. Place a sturdy piece of plywood under the
spindle to protect the bed ways during the
installation process (see Figure 18).
Plywood Protection
for the Bed Ways
Figure 18. Plywood used to protect bed ways.
3. Clean and lightly oil the camlock studs, then
thoroughly clean the mating surfaces of the
spindle and chuck.