February 14, 2006 

'Inside Hydraulics' Newsletter

1. Minimizing hydraulic equipment operating costs
2. Personal computers and hydraulic filters
3. Hydraulic equipment commissioning procedures
4. Content for your web site or e-zine
5. Help us spread the word
6. Tell us what you think


Minimizing hydraulic equipment operating costs

Hydraulic components are expensive and replacing them more often than you should really affects the bottom line. If you're an owner-operator, it hurts your wallet directly. If you're a maintenance manager or supervisor, it hurts your budget. And if you're a hands-on member of a results-orientated maintenance team, it hurts your performance bonus.

A half day workshop on how to minimize hydraulic equipment operating costs will be presented by Brendan Casey at the University of Western Australia, Perth, June 10, 2006. By applying the knowledge gained in this workshop, owners, mechanics, technicians and maintenance professionals will be able to make a measurable contribution towards extending component life, reducing downtime and cutting the operating cost of hydraulic equipment.

Earlybird and group discounts available. To enrol or for more information, visit the UWA web site, call (+61) 08 6488 2433 or download this form.

Get a lifetime of hydraulics knowledge...

Get 'Industrial Hydraulic Control'
. Find out more

2.   Personal computers and hydraulic filters

In 1977, Ken Olsen, the founder and CEO of Digital Equipment Corporation (now part of Hewlett-Packard), said:

"There is no reason for any individual to have a computer in his home."

You are probably wondering what this has to do with hydraulics. Well, in response to a recent "Inside Hydraulics" article on Magnom™ magnetic filtration technology, an experienced contamination-control practitioner wrote to me and said:

"The use of any magnetic device in a lubrication or hydraulic system is not necessary. If the ISO code is correctly maintained using conventional filtration, then there is no part for these devices to play."

The "computer" Ken Olsen had in mind back in 1977 was not the modern personal computer - the desk top device many of us use at home today to play games, send and receive e-mail, make music CDs, store photographs and keep track of the family finances.

Similarly, the magnetic filtration devices of yesterday that my learned colleague is referring to don't resemble the Magnom™ technology. Fact is, Magnom™ has already been adopted in several demanding applications:

  • A leading Formula One Racing Team uses Magnom™ on the lube-oil system of their F1 transmissions.
  • At least one major filter manufacturer is developing filter housings that combine a Magnom™ magnetic element with a conventional filter element.
  • A major construction equipment manufacturer has committed to long-term trials of Magnom™ on their machines' hydraulic systems.

A hydraulic application where Magnom™ offers unique benefits is the case drains of piston pumps and motors. Installing conventional barrier filters in case drain lines can cause problems as a result of excessive case pressure. For this reason, I only ever install 125-micron filters on pump and motor drain lines. These are brass mesh; spin-on type filters which should be grossly oversized for the expected flow rate. The downside is that particles smaller than 125 microns pass through this filter unobstructed.

Installing a Magnom™ unit immediately upstream of the 125-micron filter facilitates the capture of ferromagnetic particles - which can account for up to 90 percent of all particles suspended in the oil, down to sub-micron levels. The typically low oil viscosities and flow rates present in case drain lines enhance the separation efficiency of the magnetic element. And according to its manufacturer, the patented magnet arrangement of the Magnom™ eliminates particle wash-off under surge flow conditions.

Wear particles originating from a pump or motor and captured by the Magnom™ in this configuration are likely to be in their original state - having avoided being reworked in other parts of the system. This improves the results of analytical ferrography and therefore the ability to determine the source, cause and severity of the wear. In the case of a low speed, high torque hydraulic motor, which may be worth tens of thousands, or even hundreds of thousands of dollars, accurate component condition analysis can be invaluable.

Further reading on magnetic filtration is available here. More information on Magnom™ technology is available at www.magnom.com.

"Thanks for the great work on the two publications, Insider Secrets to Hydraulics and Preventing Hydraulic Failures. I have been in the hydraulics business for the past 20 years and it is very difficult to find any decent material on hydraulic maintenance, troubleshooting and failure analysis. These two books cover it all in easy to understand language... I conduct hydraulic training courses and plan to purchase copies to distribute to my students to share your practical approach to understanding a not so understandable subject."

Paul W. Craven, Certified Fluid Power Specialist
Motion Industries, Inc.

3.   Hydraulic equipment commissioning procedures

Incorrect commissioning during startup is a significant cause of infant mortality in hydraulic equipment. For guidance on developing commissioning procedures for your hydraulic equipment, read Brendan Casey's article in the November-December 2005 Issue of Machinery Lubrication magazine, available here. To receive a complimentary subscription to this informative magazine (US and Canada only) go to: http://www.machinerylubrication.com/hydraulic1.asp

4. Content for your web site or e-zine

Need some fresh content for your web site or e-zine? You now have permission to reprint these 'Inside Hydraulics' articles on your web site or in your e-zine, provided:

1. Each article is printed in its full form with no changes.

2. You send an e-mail to editor@hydraulicsupermarket.com to advise us where you'll be publishing them.

3. You include the following acknowledgement at the end of each article:
About the Author: Brendan Casey has more than 16 years experience in the maintenance, repair and overhaul of mobile and industrial hydraulic equipment. For more information on reducing the operating cost and increasing the uptime of your hydraulic equipment, visit his web site: http://www.InsiderSecretsToHydraulics.com

5. Help us spread the word

If you've found our 'Inside Hydraulics' newsletter interesting and informative, then chances are you have a colleague who would too. Help spread the word about 'Inside Hydraulics' by forwarding this issue to a colleague. If they share your interest in hydraulics, then they will surely appreciate being told about this newsletter.

New subscribers can get the newsletter by completing the form at http://www.insidersecretstohydraulics.com

6. Tell us what you think

We would love to hear what you think of this issue of our 'Inside Hydraulics' newsletter. And of course, if you have any suggestions for future issues, please send us those too.

Just e-mail the editor at: newslettersuggestions@hydraulicsupermarket.com

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