Quote:
Originally Posted by steverife
This argument is confusing.
A rod end is a spherical bearing, but a spherical bearing isn't necessarily a rod end. And if you refer to a rod end as a spherical bearing, you will likely confuse people and/or not get what you want.
It is kind of like asphalt concrete. Asphalt is concrete, but if you say concrete, you aren't going to end up with asphalt.
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There's a lot of people still confused about terminology, apparently. You're correct that a rod end is a spherical bearing; it simply has a male or female threaded end attached to it for ease of use.
"Rod ends consist of an eye-shaped head with integral shank forming a housing and a standard
spherical plain bearing, or a spherical plain bearing inner ring, or a spherical plain bearing inner ring and a sliding layer between the bore of the head and the inner ring."
Pointing to a rod end and calling it a spherical bearing doesn't confuse anyone who works with them, other than "rod end" rolls off the tongue a bit easier.
Heim is a company who make rod ends and other types of spherical bearings. Aurora is another company who make them AST is another. They are brands, not functional descriptions. If you say "Heim", I'm going to assume you specifically mean that brand.