| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| TIMKEN | SPB12 | Direct Cross Interchange | 1 |
| SKF | PB12 | Indirect Cross Interchange | 1 |
| POLLARD | LPB12EC | Indirect Cross Interchange | 1 |
| Boston Gear | PS12 | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | SPB12N | Indirect Cross Interchange | 1 |
| FEDERAL MOGUL | SPB12 | Indirect Cross Interchange | 1 |