ED Prevent
LATEST BLOG POST
Basic Handheld Vibration Tools
Christo van der Walt - Friday, February 17, 2012
In the entry level market where people need a basic handheld vibration tool to indicate vibration severity, two new instruments the Viber X2 and Viber X3 fit into this category.
These battery operated instruments measure the following:
Vibration measurements in 3 selectable frequency ranges
Bearing Condition measurement in wide f ..
MEDIA COVERAGE
PdMSA 2011 Conference Proceedings
5-Oct-2011
This paper focuses on a proven multi-level approach to allow engineers to understand the technology and the benefits that can be provided in each step in the route to full diagnostic vibration online systems. The paper is concluded with 3 case studies showing the discussed approaches.
PdMSA 2011 Paper (885 KB)
10 Shaft Alignment Tips
1. Ensure properly prepared and flat bases.
2. Test for soft foot and correct.3. Check stability repeatability of fixtures and method by rotating shaft and fixtures 180º. Do “rough” alignment first.
4. Conduct proper and practical training for artisans to accept modern alignment techniques.
5. Educate technical people about misconceptions on how much misalignment is truly acceptable with so-called flexible couplings. (The coupling will accept misalignment and still function but the misalignment too often still creates vibration, resulting in machinery wear).
6. Use proper alignment tolerances that are speed related.
7. Determine and compensate for thermal growth. Most technicians (and engineers) assume that the thermal growth will be as determined by the machinery manufacturer (too often wrong). For 95 percent of all machinery, growth calculations are very easy. Or, if growth calculations are calculated and the machines offset accordingly, no attempt is made to determine the machine’s final true operating temperatures.
8. Remove or check pipe strain before and/or after alignment.
9. Use properly calibrated and accurate alignment tools such as laser alignment systems.
10. Check the vibration levels before and after alignment to determine if alignment was done properly.