PTFE (polytetrafluoroethylene), aka Teflon, is typically the first choice polymer for bellows and diaphragms, but did you know that PTFE isnt the only polymer you can choose from? In this article we are going to compare two other polymers PFA and TFM to PTFE as a material choice for bellows and diaphragms.
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In this article, we are going to review some interesting facts about ball bearings that you should know.
First, you should know the men originally behind the equations and formulas engineers use for calculating static load ratings. Richard Stribeck, a German engineer, academic, and researcher who published his groundbreaking papers on bearings in the early 1900s on which most of today’s load rating equations are still based. In 1924, Arvid Palmgren of Sweden published a paper in Germany on the subject of bearing life and reliability. His subsequent work with Professor Lundberg resulted in the Palmgren-Lundberg theory. This theory evolved into ISO/ANSI/ AFBMA (Anti-Friction Bearing Manufacturers Association) standards for load ratings and life of rolling element bearings.
Here are some additional articles on advanced polymer bearings: