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Understanding Flange Bearing: An Essential Guide for Maintenance Professionals

Maintaining flange bearings is essential for the efficient operation of industrial and production equipment. Flange bearings are an important component of machines in many industries, ranging from manufacturing and processing, to power generating and material handling. Here’s a guide for maintenance professionals to understand the importance of regular maintenance of flange bearings.

What Are Flange Bearings?

Flange bearings are machine components that support a rotating shaft or help absorb radial and axial forces. They are typically designed to support loads applied at the bearing face, rather than at the centerline of the shaft. Flange bearings can either be self supporting or can be mounted to a flange plate.

Types of Flanged Bearings

Common types of flange bearings include:

  • Ball Bearings: These are the most common type of flange bearings, and consist of a metal ball or cylinder which is seated between two rings.
  • Roller Bearings: These bearings are composed of cylindrical rollers which bear and rotate on an outer race, held in place by an inner ring.
  • Sleeve Bearings: These bearings are often referred to as “plain bearings.” They are composed of metal sleeves which rotate on a metal shaft, and are typically used in low-speed, low-load applications.
  • Magnetic Bearings: These bearings use magnets instead of ball or roller elements. They can be used in applications with high speed and load, as well as extreme temperatures.

Maintenance of Flange Bearings

Regular maintenance of flange bearings is essential for preventing equipment failure and downtime. Here are a few tips for proper maintenance:

  • Check for signs of wear or damage to the bearings.
  • Check for contamination of the lubrication oil or grease.
  • Replace damaged or worn components as soon as possible.
  • Check for proper lubrication and ensure that lubricants are in good condition.

In addition to regular maintenance, it is important to periodically inspect and replace flange bearings if needed. Failure to properly maintain and inspect flange bearings can lead to a variety of problems, including bearing failure and equipment downtime.


Flange bearings play an important role in the operation of industrial and production equipment. Maintenance professionals should understand the importance of regular maintenance and inspection of flange bearings. This guide provides the basics of understanding flange bearings and how to properly maintain them for optimal performance.


  • Miller, J. (2018, May 17). What are Flange Bearings? Retrieved from https://www.mcmaster.com/what-are-flange-bearings
  • Metro Bearing. (n.d.). Bearing Installation and Maintenance. Retrieved from https://www.metro-bearing.com/Bearing-Installation-and-Maintenance.aspx

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