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Bearing Suffixes Explained: The Complete Guide to Bearing Model Codes and Suffix Meanings
Every week, I receive bearing inquiries from customers around the world. One of the most common problems is that the bearing model is incomplete. Customers often provide only the basic bearing number, such as 6205 or 22220, while important suffixes like ZZ, 2RS, C3, P5, M, or NR are missing. Although these suffixes consist of only a few letters, they define the bearing’s sealing method, internal clearance, precision, cage material, lubrication, and structural design. Choosing the wrong suffix may result in installation problems, premature failure, or unnecessary replacement costs. In this guide, I will explain the most common bearing suffixes in simple language to help buyers, engineers, distributors, and maintenance professionals select the right bearing with confidence.
