| Prefix | Suffix | Definition |
| . | B | BEARING ONLY |
| . | DC | TWO SYNTHETIC CONTACT SEALS (1600-3000 SERIES OR THEIR SPECIALS) |
| . | DCG | DOUBLE COMPOSITION SEALED BEARING WITH SNAP RING |
| . | DH | EXTENDED INNER RING WITH DRILLED HOLE |
| . | DL | TWO SEALS (7500-7600 SERIES OR THEIR SPECIALS) |
| . | DLG | TWO SEALS, SNAP RING AND GROOVE ON O.D. OF OUTER RING (7500-7600 SERIES OR THEIR SPECIALS) |
| . | DS | TWO SHIELDS |
| . | DSF | DUST SEALED ON BOTH SIDES WITH FELT |
| . | DSG | DOUBLE SHIELDED BEARING WITH SNAP RING |
| . | DSZ | EXTENDED INNER RING WITH ZERK GREASE FITTING |
| . | EIR | EXTENDED INNER RING |
| . | IDS | DUST SEALED ON ONE SIDE |
| . | IRT | EXTENDED INNER RING TAPPED FOR SETSCREW (400 SERIES TYPE SPECIAL FEATURE) |
| . | MC | ONE SHIELD AND ONE SYNTHETIC CONTACT SEAL |
| . | NH | NO HOLE IN BAND ON ONE SIDE OF BEARING |
| . | NS | NO SHIELDS |
| . | SC | ONE SYNTHETIC CONTACT SEAL (1600-3000 SERIES) |
| . | SS | ONE SHIELD (1600-3000, AND C SERIES) |
| . | SSF | DUST SEALED ON ONE SIDE WITH FELT (400 SERIES TYPE SPECIAL FEATURE) |
| C | . | GROUND SINGLE-ROW RADIAL ANNULAR BALL BEARING, NON-LOADING GROOVE, WITH RETAINER (C SERIES) |
| LC | . | LOCKING COLLAR |
| R | . | RETAINER |
| R100 | . | RUBBER MOUNTED BEARING WITH HOUSING |
| R100B | . | BEARING ONLY |
| R100M | . | BEARING AND RUBBER MOUNTING |
| RF | . | GROUND BALL THRUST BEARING, FLAT RACES, RETAINER TYPE |
