Prefixes and suffixes
The designations of most SKF rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes, as shown in the table and the examples below.
Prefixes and suffixes provide additional information about the bearing.
Prefixes are mainly used to identify components of a bearing. They can also identify bearing variants.
Suffixes identify designs or variants, which differ in some way from the original design or from the current basic design. The suffixes are divided into groups. When more than one special feature is to be identified, suffixes are provided in the order shown in the table below.
Descriptions of commonly used prefixes and suffixes are given in the following sub-sections.
Details of the significance of specific prefixes and suffixes are given in the relevant product sections.
||Suffix - Internal design|
|Suffix - External design (seals, snap ring groove etc.)|
||Suffix - Cage design|
||Suffix - Materials, heat treatment|
||Suffix - Accuracy, clearance, preload, quiet running|
||Suffix - Bearing sets, matched bearings|
|Suffix - Stabilization|
|Suffix - Lubrication|
||Suffix - Other variants|
|6205 =||Basic designation|
|‑RS1NR =||Suffix - External design (seals, snap ring groove etc.)|
|TN9 =||Suffix - Cage design|
|P63 =||Suffix - Accuracy, clearance, preload, quiet running|
|LT20C =||Suffix - Lubrication|
|VB123 =||Suffix - Other variants|
||Suffix - Internal design
||Suffix - External design (seals, snap ring groove etc.)
||Suffix - Materials, heat treatment
||Suffix - Accuracy, clearance, preload, quiet running
||Suffix - Stabilization
||Suffix - Lubrication