AS9120B, ISO 9001:2015, and FAA AC 0056B ACCREDITED

The Radius and Geometry of Bearings, Bushings, Brackets, and Blocks

When searching for bearings, bushings, brackets, blocks, and other similar components, there are many factors that one must consider. While materials, performance, and capabilities are all crucial for optimal operations to be carried out, even the highest quality part will still be a poor choice if its dimensional qualities do not match the requirements of an assembly. In this blog, we will discuss geometrical factors such as the radius of components, ensuring that you best understand part requirements prior to initiating the procurement process.

Bearings are a component that are used to facilitate motion and mitigate friction between moving parts, and bushings are simply a type of bearing that can act as a vibration isolator when placed between two components. When discussing mounting dimensions or dimensional qualities of such components, one is referring to the dimensions necessary for a bearing or bushing to be mounted on shafts or housings. When dealing with a component such as a thrust bearing, for example, mounting dimensions should allow for the bearing race to be perpendicular to the support. Additionally, the supporting area must also be wide enough to accommodate the bearing as well.

When one is searching for the right fit for their particular application, there are a few important dimensions and values that one should measure and take into account. Depending on the chamber dimension of the inner ring or outer ring of either a bearing or bushing, one can then find the right fillet radius and shoulder height that will match the element. Generally, there are numerous tables that one can use for finding correct fits, those of which are based on the bearing or bushing radius. When one utilizes a table for finding the best match for their application, it is crucial that one understands that measurements will differ on whether a bearing is a tapered roller bearing, angular contact bearing, spherical roller bearing, or another type.

Block radius and bracket radius values are also important when dealing with such components, due to the fact that blocks and brackets work alongside bearings to support rotating shafts and thrust. Generally, the inside of the bearing will exceed the shaft of a pillow block by 0.001 inches, allowing for a tight fit. With a bearing bracket, the collar will bear against tilting pads, so dimensions should allow for smooth operations to be carried out with ease.

By taking into account radii and other geometrical factors when procuring various components, one can best ensure the functionality of their systems. With improper sizing and pairings, issues such as the failure of lubrication, abrasion, and loss of performance may occur. If damage were to be caused to components as a result of improper sizing, systems may even begin to fail over time, potentially leading to delays in operations, undesirable costs for repairs, and more. Therefore, one should always take the time to accurately measure their systems and components before installation and operation.

When you are in the market for blocks, brackets, bearings, bushings, and other related components, there is no better alternative than ASAP Acquire. On our website, customers can receive top-quality items from leading manufacturers such as Cessna Citation, Jameco Electronics, Spirit Aerosystems, Bombardier Aerospace, and Sikorsky Aircraft Corp. As you explore our massive part catalogs, we invite you to utilize our RFQ services in order to request quotes for your comparisons. Once our team members receive a completed form, they will rapidly formulate a personalized solution that meets your individual needs and requirements as closely as possible. Get in contact with an ASAP representative at your earliest convenience, and see how we are revolutionizing the procurement process for our customers.


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