Page 8 - Quality Control and Assurance
P. 8
Static and Dynamic Load Testing
Load testing is normally done at our manufacturing facilities located in the U.S. and
China. Tests are performed to using both static loads, and dynamic load testing in which
the caster is attached to a
mounting plate and a load
is applied to the wheel of
the caster at increments
based on load capacity for
one minute intervals. Notes
are taken at each load
increment and the caster is
taken to a point of failure or
to the machine maximum
(whichever occurs first)
which is then used to
compute the maximum
recommended sustained
load capacity rating.
Dynamic load testing is
performed with the caster
attaching to a rotating
table.
Adhesion Test
The adhesion test uses force to separate the tread from the wheel core to determine if
the tread is attached properly to the core. The operator attempts to manually remove
the tread from the wheel core by the application of physical force. A gauge is used to
measure the resistance of the pull force during the test. The operator monitors the
pressure gage and the results are compared to the P&H adhesion guidelines to
determine if the sample passed or failed the test.
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