Milnor 36021V5Z, Service, Page: 18 / 103

About the Forces Transmitted by Milnor
®
Washer-extractors
PELLERIN MILNOR CORPORATION
rigidity (i.e., a natural or resonant frequency many times greater than the machine speed with a
reasonable factor of safety); otherwise, the mentioned 360º rotating sinusoidal RMS forces can be
multiplied and magnified many times. It is especially important to consider all potential vibration
problems that might occur due to all possible combinations of forcing frequencies (rotating
speeds) of the machine(s) compared to the natural frequencies of the floor and/or any other
supporting structure(s). A qualified soil and/or structural engineer must be engaged for this
purpose.
Figure 1: How Rotating Forces Act on the Foundation
Typical Machine
Legend
A. Direction of force
B. Load
C. Rotation (Frequency = RPM / 60)
.
Figure 1 above is intended to depict both on-grade and above-grade installations and is equally
applicable to flexibly-mounted washer-extractors, as well as to rigid models installed either
directly on a floor slab or on a foundation poured integrally with the slab. Current machine data is
available from Milnor
®
upon request. All data is subject to change without notice and may have
changed since last printed. It is the sole responsibility of every potential owner to obtain written
confirmation that any data furnished by Milnor
®
applies for the model(s) and serial number(s) of
the specific machines.
— End of BIWUUI02 —
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