uses of self-contained systems
elements of self-contained
systems:
filters
separators
Where MRF goes after use
self-contained systems vs. central
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What is the difference between self-contained and central MRF
systems? A self-contained MRF
system is a small unit that services one or two operations, while a central system
services a transfer line or group of related machines that use a common metal removal
fluid, usually for machining the same metal.
Self-contained systems are used for isolated machines, or for operations that require a
unique MRF. If a number of similar operations occur in the same area, a central system is
usually used.
What is included in a self-contained MRF system?
Self-contained clarifiers
can be filters or separators.
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 | A variety of separators are available, such as
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Because separators do not provide positive
filtration, they may not be suitable for many final operations. For finish
grinding, honing, polishing, etc., a vacuum disposable media filter is recommended.
Usually the MRF drains directly from the machine into the clarifier, or from the
machine through a short chute into the clarifier. Pay special attention to the height of
the machine discharge to avoid unnecessary pit installation. In some cases, where
accessibility is a problem, the MRF is drained into a sump and pumped over to the filter
with a sump-mounted transfer pump. However, this method often creates a clean-out problem
in the sump. On small machines the sump is too small to include a drag conveyor, and chips build up,
requiring manual clean-out.
Small individual filters work well for isolated machines or operations that
require a unique MRF, but if a number of similar operations are in the same area, a
central system is usually more functional and provides greater economy of scale. Small
filters take up more floor space per GPM (gallons per minute) than larger filters used in
central systems. Individual filters are more expensive per GPM because each unit requires
its own controls, drive mechanism, pumps, service drops and maintenance. Adequate space
should be left open around all filters (large or small) for chip removal, media
replacement and maintenance.
What is included in a central system?
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Contact Chris Roman, 