Wednesday, December 23, 2020

Which Flange Bearing Is the Best?

 

The flange bearing is a specialized type of bearing that has a lip on one side. Like all bearings, a flange

bearing functions to reduce friction between two parts. Bearings come in a wide range of sizes, shapes,

and materials and they may bear force, load, or a combination of the two, but the flange bearing is one

of the most frequently used varieties.

What Is a Flange Bearing?

A flange bearing is built differently than other bearings because one end is straight, while the other has a lip (or flange). 


Also known as a flanged bushing, a flange bearing provides more stability in an application. The flanged side secures the bearing while it’s being used, preventing it from falling, shifting, or slipping. This is critical in applications that involve axial push or load and when shafts are perpendicular to the mounting surface of the bearing. Without the flange end, an application would quickly malfunction because the bearing would slip out of position.


Flanged bearings also serve to minimize shaft flexing, vibration, and axial overload when heavy loads or high speeds are involved. Because a flange bearing is secured in place, it has the ability to withstand high temperatures that cause thermal expansion, which would compromise other types of bearings.

Determining the Best Types of Flange Bearings

Which flange bearing is best? There’s really no one-size-fits-all answer to this question. The best flange bearings are the ones that meet the needs of your application.


Although all flange bearings are similar in design, with flanges on one end, the similarities end there. There are several types of flange bearings, starting with the number of bolts needed to secure them in place:

  • Two-Bolt Flange Bearings are best used for machinery with intermediate shaft speeds and load sizes. They have a wing or diamond shape.

  • Three-Bolt Flange Bearings are the bearing of choice for industrial, agricultural, and automotive applications with light-to-medium loads. The flange-end is usually circular. 

  • Four-Bolt Flange Bearings have a great deal of stability, making them ideal for applications with rotating or linear movements or when a mounting surface is perpendicular to the shaft. They are square or circular in shape.

Beyond the bolt number and configuration, flange bearings can be differentiated by the materials used to make them. Oil-impregnated flange bearings release lubrication when under pressure and reabsorb it once the pressure is released, which is why they’re the preferred choice for applications that must be maintenance-free. You might find flange bearings mounted in thermoplastic, stainless steel, or cast iron housing. Each of these materials is suitable for different types of surfaces, machinery, and applications.


We offer a wide range of flange bronze bearings, including plain, graphite-plugged, and oil or grease grooved.

Learn More About Types of Flange Bearings

To find out more about Atlas Bronze flange bronze bearings, contact us at 1-800-478-0887 to speak to one of our representatives about our options. Our sales team has the industry knowledge to help you through the process of choosing the best flange bearings for your application.



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