Designation system

The designations of backing bearings consist of a basic designation and suffixes, where applicable.
Basic designation
Drawing number identification
BCZ-Based on a cylindrical roller bearing.
Drawing number identification starts with BCZ-.
BC2(B)Based on a double row cylindrical roller bearing.
Drawing number identification starts with BC2(B)-.

Suffixes
A, B, CDeviating or modified internal design. Combinations of these letters are also used, e.g. AB. The actual modification is specific to the individual bearing and is given on the drawing.
HA2Case-hardened outer ring
HB1Bainite-hardened inner and outer rings
HB2Bainite-hardened outer ring
PEXSKF Explorer bearing
SKF logo