| National Precision Bearing p/n | Timken Part Number |
| SS6200 | A200K |
| SS6200-2RS | A200PP |
| SS6201 | A201K |
| SS6201-2RS | A201PP |
| SS6202 | A202K |
| SS6202-ZZ | A202KDD |
| SS6202-2RS | A202PP |
| SS6203 | A203K |
| SS6203-ZZ | A203KDD |
| SS6203-2RS | A203PP |
| SS6204 | A204K |
| SS6204-ZZ | A204KDD |
| SS6204-2RS | A204PP |
| SS6205 | A205K |
| SS6205-ZZ | A205KDD |
| SS6205-2RS | A205PP |
| SS6206 | A206K |
| SS6206-ZZ | A206KDD |
| SS6206-2RS | A206PP |
| SS6208 | A208K |