The designation suffixes used to identify certain features of SKF backing bearings are explained in the following.
|A, B, C||Modifications to the original design. Combinations of these letters are also used, e.g. AC. The actual modification is specific to the individual backing bearing and reference must be made to the drawing|
|HB1||Inner and outer rings bainite hardened|
|HB2||Outer ring bainite hardened|
|V||Full complement bearing (no cage)|