| National Precision Bearing p/n | RBC Part Number |
| GE12E | MB12 |
| GE15ES | MB15 |
| GE17ES | MB17 |
| GE20ES | MB20 |
| GE25ES | MB25 |
| GE30ES | MB30 |
| GE35ES | MB35 |
| GE40ES | MB40 |
| GE45ES | MB45 |
| GE50ES | MB50 |
| GE60ES | MB60 |
| GE70ES | MB70 |
| GE80ES | MB80 |
| GE90ES | MB90 |
| GE100ES | MB100 |
| GE110ES | MB110 |
| GE120ES | MB120 |
| GE140ES | MB140 |
| GE160ES | MB160-9L |
| GE180ES | MB180-9L |
| GE200ES | MB200-9L |
| GE220ES | MB220-9L |
| GE240ES | MB240-9L |
| GE260ES | MB260-9L |
| GE280ES | MB280-9L |
| GE300ES | MB300-9L |
| GE17ES-2RS | MB17-SS |
| GE20ES-2RS | MB20-SS |
| GE25ES-2RS | MB25-SS |
| GE30ES-2RS | MB30-SS |
| GE35ES-2RS | MB35-SS |
| GE40ES-2RS | MB40-SS |
| GE45ES-2RS | MB45-SS |
| GE50ES-2RS | MB50-SS |
| GE60ES-2RS | MB60-SS |
| GE70ES-2RS | MB70-SS |
| GE80ES-2RS | MB80-SS |
| GE90ES-2RS | MB90-SS |
| GE100ES-2RS | MB100-SS |
| GE110ES-2RS | MB110-SS |
| GE120ES-2RS | MB120-SS |
| GE140ES-2RS | MB140-SS |
| GE160ES-2RS | MB160-9LSS |
| GE180ES-2RS | MB180-9LSS |
| GE200ES-2RS | MB200-9LSS |
| GE220ES-2RS | MB220-9LSS |
| GE240ES-2RS | MB240-9LSS |
| GE260ES-2RS | MB260-9LSS |
| GE280ES-2RS | MB280-9LSS |
| GE300ES-2RS | MB300-9LSS |