REGISTER NOW! August 1, 2022. FREE 1–Hour Virtual Uptime Elements Introduction

Electrical vibration appears in a vibration spectrum as a non synchronous peak or peaks. This is to say that electrical vibration frequency is not an integer multiple of shaft rate. Rolling element bearing tones and vibration from other machines are also non integer multiples of shaft rate. There are occasions in which one wishes to be certain that vibration is electrical and not coming from another source. This is especially true in VFD's which can create some frequencies in the vibration spectrum that look very much like bearing wear patterns. One way to do this is to monitor the machine in real time, with a live spectrum on the screen of the data collector, and then shut the machine off. Any vibration that is electrically related will disappear immediately from the vibration spectrum while shaft related vibration peaks will gradually move to the left of the screen as the machine slows down. External vibration will remain where it was. This is a quick and easy way to distinguish electrical vibration from mechanical vibration, but of course one needs to be able to shut the machine down in order to take this test.

Learn more

Tip provided by: Jason Tranter, Managing Director, Mobius Institute

Mobius Logo

Upcoming Events

August 9 - August 11 2022

MaximoWorld 2022

View all Events
80% of newsletter subscribers report finding something used to improve their jobs on a regular basis.
Subscribers get exclusive content. Just released...MRO Best Practices Special Report - a $399 value!
Reliability Leader Fluid Cleanliness Pledge

Fluid Cleanliness is a Reliability Achievement Strategy as well as an asset life extension strategy

MaximoWorld 2022 Conference Austin Texas

Connect with leading maintenance professionals, reliability leaders and asset managers from the world's best-run companies who are driving digital reinvention.

“Steel-ing” Reliability in Alabama

A joint venture between two of the world’s largest steel companies inspired innovative approaches to maintenance reliability that incorporate the tools, technology and techniques of today. This article takes you on their journey.

Three Things You Need to Know About Capital Project Prioritization

“Why do you think these two projects rank so much higher in this method than the first method?” the facilitator asked the director of reliability.

What Is Industrial Maintenance as a Service?

Industrial maintenance as a service (#imaas) transfers the digital and/or manual management of maintenance and industrial operations from machine users to machine manufacturers (OEMs), while improving it considerably.

Three Things You Need to Know About Criticality Analysis

When it comes to criticality analysis, there are three key factors must be emphasized.

Turning the Oil Tanker

This article highlights the hidden trap of performance management systems.

Optimizing Value From Physical Assets

There are ever-increasing opportunities to create new and sustainable value in asset-intensive organizations through enhanced use of technology.

Conducting Asset Criticality Assessment for Better Maintenance Strategy and Techniques

Conducting an asset criticality assessment (ACA) is the first step in maintaining the assets properly. This article addresses the best maintenance strategy for assets by using ACA techniques.

Harmonizing PMs

Maintenance reliability is, of course, an essential part of any successful business that wants to remain successful. It includes the three PMs: predictive, preventive and proactive maintenance.