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

The following procedure uses nine basic steps to be followed in looking for the causes of a failed bearing, and within each of the steps are numerous questions to be asked. It starts with an inspection of the housing and surroundings so as to better understand the bearing's operating conditions, then looks at the exterior of the bearing (to understand the heat transfer and supporting forces) and, the internals (to see the actual operating forces).

The nine steps we use in finding physical causes of the bearing failure are:

1) Understand the background, i.e. the bearing's history

2) Inspect the contact surfaces of the inner and outer rings, i.e., the inner- and outer-race fits.

3) Next look at the sides of of both ring exteriors.

4) Remove the seals and/or shields and visually examine the lubricant.

5) Look at the application, determine the loads, understand what the ball and rollers paths should look like, and separate the rings in such a way that those paths can be inspected. Then place the rotating ring on a "Lazy Susan" and slowly rotate the bearing while watching the ball/roller path.

6) Continuing with the physical inspection, place the fixed ring on a lazy Susan and slowly rotate it while watching the ball/roller path.

7) Test the rings and roller elements for hardness.

8) Inspect the cage, paying careful attention to the surfaces that the elements come into contact with.

9) Inspect the rolling elements.

Tip excerpted from:Practical Plant Failure Analysis by Neville Sachs

Bonus Tip: Attend Solutions 2.0 to participate in the Practical Plant Failure Analysis workshop led by Neville Sachs

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.