The
KISS Principle V
Hydraulic System
We continue our discussion about our hydraulic system components and
how they are applied to our task. Our pumps, sump and system circuitry
have been previously described so this week I will cover the rotating
components, our pumps and motors in more detail.
The Orbital Action screening machine works and continues to work for a
long time as a result of selecting quality components and then applying
them is a very conservative way. Each hydraulic component manufacturer
publishes a design life projection chart which offers expected
operating life listed in hours when used under suggested loading
parameters.
We select and use components that suggest we may expect many thousands
of life hours and then apply them at less than their continuous use
rating. For example, a typical variable volume pump as used on our
Model 68A will have a peak pressure rating of 4000 PSI or more. It will
have a continuous use rating of 3500 PSI. Our pressure relief valve
settings are 2500 PSI and our normal operating pressure will be around
1500 PSI. Our hydraulic motors will fall into a similar rating and use
category.
By building our Model 68A with components such as described we are able
to feel very comfortable when saying you should expect many years of
hydraulic system life, even if you are operating every day of the
working week.
Brads Blog, “The Finer Cut”, is another of
many
planned. Each issue will cover a topic of interest about our machines,
our industry, our customers and more. I look forward to this task and
am excited about the opportunity to broaden our communications with our
customers and industry. I invite you to return and visit from time to
time, cruising back through issues to see what I may have been thinking
of at another time.
I also invite you, our reader to contribute by offering your comments.
Please send your thoughts to Brad@orbitscreens.com
, by letter or fax, 563-922 9060.
Happy screening
Brad Schnittjer
Blog # 09-8
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