Timken Bearing Cross-Reference & Interchange Chart

For ball bearings, Timken's short-form numbers (like 205PP) map directly to the ISO metric series (6205-2RS). The last digits are the bore-size code; PP indicates two contact rubber seals, the same as 2RS on SKF/FAG/KOYO or LLU on NTN. Shielded variants carry a KDD suffix (equivalent to 2Z / ZZ).

For tapered roller bearings, Timken and the industry share a common cone/cup callout — an L44649 cone from Timken interchanges 1:1 with the same number from any major manufacturer. On spherical and cylindrical roller bearings the base number matches ISO, and Timken adds its own suffix (EJ, YM) to indicate cage and heat-treat class.