Pre-fix and Post-fix Coding Systems Used by NSK
NSK is one of the largest manufacturers of Bearings and is used by many industries around the world. In order to keep track of the bearings that NSK produces, a detailed coding system is used. This coding system consists of both pre-fix and post-fix codes that are used to identify specific bearings.
The pre-fix codes are used to identify series, internal clearance, special cleaning, and P4 accuracy grades. These codes are usually given as a letter followed by a number. For example, R6 is the code for a specific metric bearing series, C0 is the code for zero internal clearance and P4 is the code for a P4 accuracy grade.
The post-fix codes are used to identify specific bearings in the series. These codes are usually given as a number followed by another letter. For example, 2RS is the code for a bearing that has two rubber seals and Z is the code for a bearing that has a P4 accuracy grade.
NSK also uses special codes for custom-made bearings. These codes are usually given as a letter followed by two numbers. For example, W39 is the code for a custom-made bearing in a specific series and M14 is the code for a bearing that has a P4 accuracy grade.
The above coding system is only used by NSK and not by any other bearing manufacturers. It allows customers to quickly and easily identify their bearings when ordering parts or looking up details.
NSK also uses specific symbols to identify the type of bearing. These symbols are usually given as a letter followed by a number. For example, C is the symbol for a deep groove ball bearing and J is the symbol for a cylindrical roller bearing.
In conclusion, the exact pre-fix and post-fix codes used by NSK depend on the type and style of bearing. The pre-fix codes are used to identify series, internal clearance, special cleaning and accuracy grades while the post-fix codes are used to identify specific bearings in the series. Special codes are also used for custom-made bearings and specific symbols are used to identify the type of bearing. All of this information makes it easy for customers to quickly and easily identify their bearings.
