Designation system

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 (→ Basic bearing designation system).

An example and the applicable options for cam rollers are given below.
Basic bearing designation system


305803 C-2Z
where305803 C =
-2Z =

Prefixes (n.a.)

Basic designation
3612.. R
Single row cam roller with an NBR contact seal on both sides
3057.. C
Double row cam roller with a cylindrical (flat) outer ring running surface
3058.. C
Double row cam roller with a crowned outer ring running surface

Suffixes - Internal design (n.a.)

Suffixes - External design (seals, snap ring groove, etc.)
-2RS1NBR contact seal on both sides
-2ZSheet steel shield on both sides

Suffixes - Cage design (n.a.)
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