February 14, 2014
We will have all our shaft alignment, pulley alignment and vibration analysis and balancing maintenance-related products on display at the following trade shows:
CENTRAL VALLEY FACILITIES EXPO
March 12 – 13
Attend our session: Field Balancing – Tips and Tricks on Wednesday, March 12, 8:25 – 9:25 am by Greg Lee
NORTHWEST FACILITIES EXPO
March 19 – 20
Attend our session: Field Balancing – Tips and Tricks on Wednesday, March 19, 9:35 – 10:35 am by Greg Lee
Here’s a small preview of what both presentations will cover…
Ever wondered just what do we mean by balanced? Learn the basics of field balancing as we stand by the fact that balancing is one of the cornerstones of maintaining smooth running machinery. Want to know what exactly cannot be balanced? Are you curious about what is the best method of balancing in the field? Come join Greg Lee & learn real world balancing from an expert.
FEATURED PRODUCT: While at the shows, not only learn from top experts about current trends in the industry but also be sure to visit our booths where we will exbibit our selection of Balancers. Our VIBXPERT II Balancer will be on display there to demo how field balancing in one or two planes is really done.
February 13, 2014
Guest post by Kasey McClain, Mechanical Engineer at Pioneer Engineering
Everyone knows that lubrication is crucial to the life of a bearing. Two common types of bearing lubrication are grease and oil. I commonly see oil bath lubrication and oil mist along with grease lubrication. One of the biggest problems that I have encountered with greased bearings is over greasing. When installing a new bearing assembly, it is important to note whether the bearings are pre-greased by the manufacturer. Over greasing will not allow the heat to dissipate from the bearing which will cause the bearing to expand and cause a tolerance stack up which may then show bearing defects. This may also cause an existing defect to progress, decreasing the life of the bearing. With an oil bath lubrication system, too much oil can be just as detrimental as too little oil. With too little oil, the slinger ring, or whichever component carries the oil, will not be submerged in the oil and will not be able to lubricate the necessary components. With too much oil, some of the components may not get the lubrication necessary. Oil mist systems have been shown to eliminate the issue of too much or too little oil. However, running the mist system low on oil will cause the components to not be lubricated. Also, the oil misters can become clogged which would lead to a lack of necessary lubrication. This is why regular lubrication monitoring is necessary to keep equipment running smoothly for as long as possible. Attention to detail is essential in all aspects of machinery maintenance.
February 6, 2014
By Deron Jozokos with Shoreline Reliability, LUDECA solutions provider for New England and Eastern New York
Yesterday I visited a customer at a ski resort for an alignment demo and he asked if I would demo our tools on his actual machinery, a recently rebuilt pump that was installed by a vendor. I readily agreed as I thought this would be a good opportunity to show how easy the tool is to use on his actual machinery. After setting up on the pump and motor, we entered the machine dimensions into the SHAFTALIGN computer and took an initial alignment reading and soft foot reading and saved the file “As Found”. In addition to a severe soft foot condition and misalignment, I pointed out some other issues with the machines. The shims used previously were undersized for the motor feet, and the washers used under the hold-down bolts were damaged and “cupped”. Also, on two feet the bolt holes didn’t line up with the foundation bolt holes which resulted in the hold-down bolts being cocked.
I recommended that we fix each issue, all of which could be done fairly quickly. We replaced all of the shims with new precut stainless steel shims, eliminated the soft foot and slid the lower frame laterally so we could line up the bolt holes correctly. From there we re-measured the alignment condition and made the corrections indicated by the SHAFTALIGN system.
We took one last verification measurement and got two Smiley Faces which indicated that the alignment was now within the Excellent range for 1775 RPM tolerances. They were also interested in seeing the new TABALIGN system in action so we downloaded the TABALIGN from the Google Play Store to their Android tablet, synced it to the same sensors and took the measurements which repeated exactly the SHAFTALIGN results. They were very happy with the results but at the same time worried about the rest of their machinery that probably has many of the same issues that we had found on this pump-motor set. They’ll be correcting all of those shortly though!
February 4, 2014
Alarms can save time and assist in notification of impending issues when analyzing vibration data within your Condition Monitoring software. Of course the correct alarms must be set in order for the analyst to perform his or her job correctly. Too many times the incorrect levels are set for alarms causing a machine to either be constantly in alarm or for the monitored conditions never to reach the required levels to alert the analyst of an issue that should be alerted.
OMNITREND software has many different alarms that can be configured to assist the analyst in preforming their job. Over time the running condition of a machine will change and it is important to make certain that the alarms are also checked and tweaked if needed. An alarm value might need to be changed many times over the life of a machine.
OMNITREND has a feature that allows the end user to view the collected data and adjust or set alarms according to the machines’ vibration levels. These “smart alarms” should be set after collecting data for at least three months. The three month period allows the analyst to view how that machine has operated over that time period. The ability to display many different data readings at once on the same screen is provided. This allows for smart alarms to be configured using the vibration levels from the machine. Do remember that a machine’s vibration signature will change over time. Be certain to update your alarms with that information in mind.
If you have any questions or need assistance configuring alarms within OMNITREND please contact us. Our hardware and software support is offered at no charge to our valued customers.
January 30, 2014
Some studies have shown that 70% of reliability efforts fail. Some of the main reasons for this are changes in key individuals responsible for the implementation, support and management of these efforts. Individuals become frustrated and leave, are moved into other positions, terminated by management that does not see the value of their efforts, assigned other tasks and not allowed to complete their primary goals, etc. Don’t just sniff around, find ways to mark your territory and then leave. Set clear obtainable goals, make sure that the value of your efforts is understood, provide support to those trying to improve equipment reliability, be patient and see things through to the end. Do not become part of the negative statistics.