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ENTANGLEMENT. Entanglement with a rotat-
ing chuck can lead to death, amputation, broken
bones, or other serious injury. Never attempt to
slow or stop the lathe chuck by hand, and always
roll up long sleeves, tie back long hair, and remove
any jewelry or loose apparel BEFORE operating.
CHUCK SPEED RATING. Excessive spindle
speeds greatly increase the risk of the workpiece
or chuck being thrown from the machine with
deadly force. Never use spindle speeds faster than
the safe limits of your chuck and workpiece.
USING
CORRECT
workpieces can only be safely turned in a lathe if
additional support equipment, such as a tailstock
center, is used. If the operation is too hazardous
to be completed with the lathe or existing equip-
ment, the operator must have enough experience
to know when to use a different machine or find a
safer way.
TRAINED OPERATORS ONLY. Using a chuck
incorrectly can result in workpieces coming
loose at high speeds and striking the operator or
bystanders with deadly force. To reduce the risk of
this hazard, read and understand this document
and seek additional training from an experienced
chuck user before using a chuck.
CHUCK CAPACITY. Avoid exceeding the capac-
ity of the chuck by clamping an oversized work-
piece. If the workpiece is too large to safely clamp
with the chuck, use a faceplate or a larger chuck
if possible. Otherwise, the workpiece could be
thrown from the lathe during operation, resulting in
serious impact injury or death.
CLAMPING FORCE. Inadequate clamping force
can lead to the workpiece being thrown from the
chuck and striking the operator or bystanders.
Maximum clamping force is achieved when the
chuck is properly maintained and lubricated, all
jaws are fully engaged with the workpiece, and
the maximum chuck clamping diameter is not
exceeded.
Model T10809 Wood Lathe Chuck Set
Safety for Chucks
EQUIPMENT.
Many
PROPER MAINTENANCE. All chucks must be
properly maintained and lubricated to achieve
maximum clamping force and withstand the rigors
of centrifugal force. To reduce the risk of a thrown
workpiece, follow all maintenance intervals and
instructions in this document.
DISCONNECT POWER. Serious entanglement or
impact injuries could occur if the lathe is started
while you are adjusting, servicing, or installing the
chuck. Always disconnect the lathe from power
before performing these procedures.
TOP JAW TYPES. Mixing top jaw types will create
an unbalanced and off-center load that could fly
from the lathe and cause personal injury or prop-
erty damage. Use all four top jaws of the same
type when securing workpiece.
POWER TOOLS. Do not use power tools on cap
screws or grip studs, which can easily damage the
threads and cause the component to fail during
operation. A workpiece or chuck component not
properly secured can fly off during operation and
cause serious personal injury.
TENON/RECESS SIZE. Size the tenon or recess
properly and choose the correct jaw configuration
so that there is the greatest possible amount of
surface contact between jaws and workpiece. The
greater the surface contact, the greater the grip-
ping power!
FLAT JAWS. Flat jaws (or cole jaws) provide the
least gripping power of the jaw types. Always use
slow speeds when using flat jaws.
SAFETY SET SCREW. The safety set screw
under bottom jaw #4 prevents the jaws from mov-
ing beyond safe engagement with the scroll gear.
If this should happen, the jaws and workpiece
could fly off the chuck during operation resulting
in serious personal injury to operator or bystand-
ers. Always make sure this set screw is properly
installed and tightened when using the chuck.
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