Three Levels of Report on Bearing Damage and Failure

Visit our bearing failure case study page for examples of each type of report, aside from the Class A Expert Witness reports which are confidential.

Class A Expert Witness

To be used as part of a claim or court case.

J A D will require a brief from legal counsel, information on the application of the bearing and the reason for the claim. Our expert will also require access to the damaged or failed components.

The report will cover multiple pages and include digital images, descriptions of damage and comments on the failure mode identified in accordance with the requirements of part 35 civil procedure rules.

Class B Detailed analysis

To be used to analyse bearing failure or damage that has occurred during service.

J A D will require details of the application of the bearing and the reason why it was removed from service. Our expert will also require access to the damaged or failed components.

The report will cover 5-20 pages and include digital images, comments on failure mode and (where appropriate) suggestions of preventive action for the future.

Class C Remote View

To be used to remotely review a failed or damaged bearing, with no requirement to transport the components to J A D.

J A D will require details of the application of the bearing and the reason why it was removed from service. J A D will also need between 3-5 digital images of the damaged portions of the bearing, the shaft and/or the housing. These images can be uploaded on this website at any time

The report will cover 3-5 pages, commenting on the damage identified by the digital images and commenting on potential reasons for failure.

J A D Analysis can perform bearing investigations and bearing failure analysis on most sizes and types of rolling element bearings.

As a company independent of any one bearing manufacturer, our experts have provided reports for the automotive and industrial engineering sectors as well as for aftermarket distributors. Our reports are unbiased and produced without prejudice.

Bearing Failure Inspection and Analysis

Understanding why a bearing has failed is one of the best ways to prevent the same failure from happening again. Almost all bearing failures and damage are either caused by:

  • Improper lubrication
  • Contamination
  • Poor installation
  • Handling or maintenance regimes

All these reasons can be prevented in future once identified.

The team at J A D Analysis has years of experience studying bearing damage and failures that have occurred in automotive, agricultural, general and heavy engineering applications. We extract evidence from the bearing parts and, where available, their mating components; with this evidence we carry out a failure analysis of the application to determine the most likely root cause of the problem.

Failure analysis is valuable in situations such as...

  • Where an end user is claiming compensation for being supplied a 'faulty bearing'
  • Where a user feels they have been supplied a substandard or counterfeit product
  • Identifying the reasons for a catastrophic bearing failure having occurred
  • Determining a problem in a machine when the bearings need to be replaced frequently
  • When a machine or vehicle is stripped for routine maintenance and bearing damage is seen
  • When selling an improved solution to an existing user

The bearing failure experts at J A D Analysis understand that an academic bearing failure study and investigations can be expensive. We therefore utilise our years of experience to identify the problem before any further expense is required.