OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.0.1 dated 2015-05-27
Page 43
Original operating instructions
TU3008 | TU3008V
GB
4.12.6 Clamping a workpiece into the three jaw chuck
When the workpiece is being clamped unprofessionally, there is a risk of injury as the work-
piece may fly off or the jaws may break. The following examples do not show all possible situa-
tions of danger.
Incorrect
Correct
Clamping length too long,
overhang too long.
Additional support over
center or rest.
Clamping diameter too
large.
Use
larger lathe.
Workpiece is too heavy
and clamping grade too
short.
Support over center,
enlarges clamping grade.
Enlarged clamping grades
are not available for this
three-jaw chuck.
Possibly use larger lathe.
Clamping diameter too
short.
Clamp on the largest
clamping diameter possi-
ble.