ATS Systems Ultimate Chuck Installation and Operations Manual
• The jaws should be designed to be as light and as
low as possible. The clamping point should be
located as close to the chuck face as possible.
(Clamping points with greater distances cause
increased surface pressure in the jaw guides and
can reduce clamping force substantially).
• If the design of the special jaws requires them to
be wider and/or higher than the standard factory
stepped jaws designated for the chuck, then it is
important to consider the higher centrifugal
forces involved when calculating the resulting
clamping force and maximum speed allowed
with these jaws. Caution: Jaws should never be
positioned to extend beyond the outside diameter
of the chuck more then the standard amount as
described for the standard base jaws in the ATS
technical specification. Caution: Jaws should
never extend from the face of the chuck a
distance more then 30% of the diameter
measurement of the chuck. Excessively tall jaws
that are operated with either high grip force or
high speed or a combination of speed and grip
force can over stress the bolts that hold the top
jaw to the base jaw.
• Do not use welded jaws.
• The mounting bolts must be arranged in such a
way as to ensure that greatest possible strength is
achieved.
• The maximum recommended speed may only be
used in conjunction with maximum draw bar
pull, only with chucks that are in perfect working
order, and only with standard hard jaws
positioned within the chuck diameter (or
equivalent jaw and diameter) .
• After a crash, the chuck must be examined for
cracks and other damage, and grip performance
inspected before being put back into operation.
Damaged parts must be replaced with original
ATS spare parts.
• Top jaw mounting bolts must be replaced if they
show signs of wear or damage. Only use grade
12.9 bolts of sufficient length to engage at least a
thread length equal to 1 ½ - 2 times the screw
diameter.
1.3.7 Safety during Maintenance
Follow all normal safety precautions when
performing maintenance on the chuck or any portion
of the machine tool, such as turning off the electrical
power and locking out electrical service, wearing
safety equipment, etc.
Only operate power chucks when all safety guards
have been installed and are in full working order.
Check the power chuck at least once per shift for
externally visible damage and faults.
Report any changes including changes in operational
behavior to the responsible persons immediately. If
necessary bring the spindle to an immediate stop and
lock out the electrical supply.
Only restart the machine to which the power chuck is
installed when the cause of the problem has been
eliminated.
1.3.8 Notes on Instruction of Operating Personnel
We recommend that the user of our power chucks
make the operating instructions, in particular the
“Precautions” section, available to all persons who
will be operating, maintaining or repairing the chuck
or the machine tool to which it is installed. We
further recommend that the owner issue “operating
instructions” which consider the qualifications of the
operating personnel known to him.
Participation in training programs and courses etc.
with the aim of gaining knowledge in operation,
maintenance and repair of the power chuck should be
confirmed in writing for the business operator. For
this purpose we recommend duplicating and using the
following form.
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