Flange Bearings Explained in All Their Varieties

Posted on Nov 12, 2020

Flange bearing

Flanged bearings come in several different types and are designed to meet specific application or situation requirements. Different types of these flange bearings have different designs, cages, load capacities as well as different performances.

These bearings are designed to mount ball bearings with high precision and efficiency, as these bearings are very strong, waterproof, and dirt resistant, suitable for mounting in other devices with rotating or linear motion. A flanged ball bearing is not a new kind of bearing.

Just as deep groove ball bearings are provided sealed or open, flanged, or plain bearings are also available. The flange is just another choice given to the designer by the manufacturer of the bearings. The flange is an extension or lip on the bearing outer ring, designed to facilitate bearing mounting and positioning in delicate or problematic applications. In this article, we provide an overview of the different flange bearing types and their applications.


The Different Types & Applications of Flange Bearing

  • Flange Bearing Types
    Bearings found in flange-mounted housings are termed self-aligning bearings. Several different types of bearings can be found in a flanged housing. The correct form of selection depends on the requirement and the organizational requirements needed.
  • Roller Bearing
    The roller bearings have a roller as a rolling feature. They are used to maintain steady, low-friction motion in rotary applications and have a higher radial load capacity than ball bearings. The architecture consists of an inner and outer loop, a roller, and usually a cage or roller separator. There are three major types of rolling bearings available.
  • Cylindrical Roller Bearing
    Flange cylindrical roller bearings have a high radial load capacity and moderate thrust loads.
  • Ball Bearing
    Flange ball bearings are made of a ball as a rolling part. They are used to maintain steady, low-friction motion in rotary applications. The architecture consists of an inner and outer ring, a ball, and usually a cage or a ball separator.
  • Spherical Roller Bearing
    When it comes to flange bearings, spherical roller bearings are the most commonly used subtype. They include two sets of friction-reducing, barrel-shaped rollers sandwiched between the outer ring of a circular raceway and the inner ring of two inclined raceways.
  • Tapered Roller Bearing
    Flange-type tapered roller bearings have an inner ring, an outer ring, and a variety of tapered roller bearings. Visible separately, the inner and outer bearing rings are both tapered, identical to the taper section. Owing to the wide contact surface, the tapered roller bearings are capable of withstanding heavy axial and radial loads.
  • Bushing
    Bushings are used to restrict, guide, or reduce friction in rotary or linear applications. They work with a slipping motion as opposed to the rolling motion used by a ball, roller, and needle roller bearings. Lubricating is important to the operation of flat bearings to prevent overheating due to friction.

Flange Bearing Housings

Housings are typically are diamond-shaped, and each side is equipped with two bolt holes. A clear line is created by the line along the axes of the assembly troops through the heart. Flanging locking bearings with three bolts are arranged radially at an angle of 120 ° to each other around the bearing axis or on a triangular flange offset from the bearing axis.

Four flanged rods have four radially mounting holes along the axis of the load. Usually, the four-bolt flanges have round or square housings.


Flange Bearing Applications

Any application needing a bearing to be installed in a high-vibration environment, as well as any application requiring high axial loads, would benefit from a flanged bearing. Automotive applications are a prime example, a construction engineer must be able to pick and assemble a bearing that can endure both friction and high temperatures.

As a consequence, the adhesive or disturbance fit in the bearing assembly in automotive applications is always inadequate. To guarantee a long life and longevity of the bearing, the option is provided by a flange bearing. The flange bearing can hold its location and withstand the aggressive atmosphere and friction inside the car.

Quite high temperatures would also require the option of a flange bearing. Under-hood applications where temperatures frequently exceed around 180 ° C and the inclusion of materials such as those between the ball bearing and the housing or shaft can result in a different rate of thermal expansion.

For example, a steel bearing is pressed into an aluminum housing; the housing may be stretched earlier than the steel bearing, thereby losing contact with the bearing. Flange bearings are most widely found in light applications such as food processing equipment, conveyors, material storage, HVAC belt drives, textiles, luggage systems, surgical processing, and many other light industrial applications.


Important Flange Bearing Specifications

There are several specifications to remember when choosing a bearing flange. Top speed is the high speed at which the bearing can work safely before failure. This is influenced by the load properties, the lubrication of the bearings, and the temperature. Normally, the median life of a flange bearing does not exceed five times the rated life.

Bearing life, also known as L10 rating life, is a statistical indicator of life that 90 % of a group of apparently similar ball bearings will attain or surpass. In the case of a single bearing, L10 also applies to the life synonymous with 90% reliability.


Regarding Flange Bearing Load

Flange loads are a mixture of radial loads and thrust forces. If, in addition to radial loads, the bearing is meant to withstand the thrust forces, the following points must be considered for the extent of the impact force.

If the thrust load is half the radial load, the selection should be made based on the radial load applied. If the thrust loads are equal to or greater than half of the radial load, the selection shall be made based on the total load as the equivalent radial load applied.

If the flange bearing is needed to absorb the thrust forces in addition to the radial loads, a great deal of consideration shall be given to the magnitude of the thrust force. If the thrust load is half of the radial load, the selection should be made based on the radial load applied.

If the thrust load is equal to or greater than half of the radial load, the decision should be made based on using the overall load (radial and thrust loads together) as the equivalent radial load applied.


Flange Bearings on IMTS-Exhibition.com

You can find many flange bearing suppliers on imts-exhibition.com. Just head to our product section or check out our search function to find hundreds of suppliers in our product database. If you want to learn more about bearing related questions and applications make sure to check out our other blog entries.

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