Cookies on the SKF website

We use cookies to ensure that we give you the best experience on our websites and web applications. By continuing without changing your browser settings, we assume you give your consent to receive cookies. However, you can change your browser cookie setting at any time.

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.)
-2RS1RS contact seal on both sides
-2ZSheet steel shield on both sides

Suffixes - Cage design (n.a.)
SKF logo