Bearing number
A bearing number refers to a unique alphanumeric code assigned to a specific type of bearing by its manufacturer. This number serves as an identifier for the bearing and provides information about its size, design, and other characteristics.
For example, in a standard bearing number like “6204”, the “6” typically denotes a deep groove ball bearing, “2” indicates the series (in this case, it could signify a standard metric series), and “04” represents the bore diameter or inner diameter size (in millimeters) of the bearing.
The bearing number may also include additional suffixes or prefixes to denote variations such as seal type, clearance, precision, and special features.
Bearing numbers are standardized across the industry, allowing engineers and users to easily identify and select the appropriate bearings for their applications. These numbers are often included in bearing catalogs and specifications provided by manufacturers.
In addition to the numerical code, bearing numbers may also include letters or symbols to denote specific features or configurations. For example:
– “ZZ” signifies metal shields on both sides of the bearing for added protection against debris and foreign particles.
– “RS” or “2RS” indicates that the bearing has rubber seals on both sides to prevent contamination and retain lubricant.
– “ABEC” or “ISO” ratings denote the precision class of the bearing, with higher numbers indicating tighter tolerances and greater precision.
– “C3” denotes an increased internal clearance, providing space for thermal expansion or misalignment compensation.
By understanding bearing numbers and their associated symbols, users can make informed decisions when selecting bearings to ensure optimal performance and reliability in their applications.