Operation
Version 1.0.1 dated 2017-11-16
Page 39
Translation of the original instructions
TX6222
GB
T
X
6222
_GB
_4.
fm
OPTIMUM
M A S C H I N E N - G E R M A N Y
®
The permissible speeds can be determined in accordance with VDI Guideline 3106 "Determin-
ing the permissible speed for lathe chucks (jaw chucks). This guideline also allows for the resid-
ual tensioning force at a specified speed to be determined.
4.11.3 Maintenance of chucks
A crucial prerequisite for fault-free functionality of a lathe chuck is regular and thorough lubrica-
tion of the sliding surfaces. This prevents the reduction of tensioning force and premature wear
and tear.
Always observe the manufacturer's maintenance instructions when using replacement lathe
chucks.
Coolant squirts on the lathe chuck and removes the grease from the jaws. In order to maintain
the tensioning force and the long-term accuracy of the lathe chuck, the lathe chuck must be
lubricated regularly. Insufficient lubrication will result in malfunctions with significantly reduced
tensioning force, which affects the accuracy and causes excessive wear and seizing.
Lubricate the installed lathe chuck at least once per week. The used lubricant should be of high
quality and provided for high pressure bearing surfaces. The lubricant should withstand the
coolant and other chemicals.
Clamping jaws and jaw mounting screws are wear and tear parts. The service life is limited. We
therefore recommend having them inspected at regular intervals by a specialist (e.g. inspection
for cracks using a dye penetration process or magnet powder test (fluxing), eddy current test-
ing, ultrasound testing) and replace if necessary.
4.12
Clamping a workpiece into the lathe 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.
Base tensioning force
Required minimum tensioning force
C
lam
p
ing
f
or
ce
Cen
trifugal force
Speed
Ef
fec
tive
tensio
ning f
orce
Workpiece is
released uncontrollably
Incorrect
Correct
Clamping length too short,
overhang too long.
Additional support over
center or rest.
