| Prefix | Suffix | Definition |
| . | 1 | ABEC-1 TOLERANCE. |
| . | 1 | STANDARD FIT. |
| . | 1 | LUBRICANT CODE. STANDARD GREASE M24. |
| . | 2 | TIGHT FIT. |
| . | 3 | ABEC-3 TOLERANCES. |
| . | 3 | LOOSE FIT. |
| . | 5 | ABEC-5 TOLERANCES. |
| . | 7 | ABEC-7 TOLERANCES. |
| . | A | LUBRICANT CODE ANDEROL L-793. |
| . | A | DEVIATION FROM STANDARD DESIGN. |
| . | B | LUBRICANT CODE TEXACO 1692, LOW TEMPERATURE OIL. |
| . | B | EXTERNAL SELF-ALIGNING (BEARING ONLY) . |
| . | C | LUBRICANT CODE, SPECIAL LUBRICANT WHICH DOES NOT HAVE A SPECIFIC CODE LETTER. |
| . | CG | SNAP RING GROOVE. |
| . | CG | SNAP RING GROOVE (STANDARD POSITION ON DOUBLE ROW BEARINGS IS ON FILLING SLOT SIDE) . |
| . | CT | CLUTCH THROWOUT TYPE. |
| . | CTH | CT TYPE WITH NIPPLE FOR GREASE FITTIPG. |
| . | CTM | CT TYPE WITH STEEL SHELL. |
| . | CTN | CT TYPE WITH OIL HOLE.C2176 |
| . | CTQ | CT TYPE WITH STEEL SHELL. |
| . | CTR | CT TYPE WITH NIPPLE FOR GREASE FITTING. |
| . | D | LUBRICANT CODE, DOW CORNING 44, MIL-L-15719. |
| . | E | LUBRICANT CODE, SHELL, AEROSHELL 7A. |
| . | E | SINGLE PLASTIC SEAL. |
| . | E | PLASTIC SEAL. |
| . | EE | DOUBLE PLASTIC SEAL. |
| . | F | SINGLE STEEL SHIELD. |
| . | F | SINGLE SHIELD. |
| . | FE | SHIELDED BOTH SIDES. ONE SIDE STEEL SHIELD; OPPOSITE SIDE PLASTIC SEAL. |
| . | FF | DOUBLE STEEL SHIELD. |
| . | FF | DOUBLE SHIELD. |
| . | FG | SNAP RING AND SHIELD ON THE SAME SIDE OF BEARING. |
| . | FR | SHIELDED BOTH SIDES - ONE SIDE STEEL - OPPOSITE SIDE BUNA-N SEAL. |
| . | G | LUBRICANT CODE, TEXAS CO. "NO. 3007", MIL-L-3545. |
| . | GF | SNAP RING - SINGLE SHIELD AT OPPOSITE SIDE OF BEARING. |
| . | GF | SNAP RING GROOVE WITH SHIELD ON OPPOSITE SIDE (STANDARD) . |
| . | GFF | SNAP RING GROOVE WITH SHIELDS ON BOTH SIDES. |
| . | GR | SNAP RING GROOVE WITH R SEAL OPPOSITE (STANDARD) . |
| . | GRR | SNAP RING GROOVE WITH R SEALS ON BOTH SIDES. |
| . | H | SYNTHETIC RUBBER CONTACT SEAL. |
| . | H | LUBRICANT CODE ANDOK C. |
| . | HH | FAIRPRENE BUNA-N CONTACT SEAL. |
| . | J | MOLDED SYNTHETIC RUBBER WITH STEEL INSERT, CONTACT SEAL. |
| . | J | MOLDED SYNTHETIC RUBBER LIP SEAL. |
| . | J | LUBRICANT CODE, SOCONY BRB LIFETIME GREASE. |
| . | JJ | DOUBLE MOLDED SYNTHETIC RUBBER SEAL . |
| . | K | LUBRICANT CODE, GULF PRECISION §2 GREASE. |
| . | K | REMOVABLE SYNTHETIC RUBBER LIP SEAL. |
| . | L | LUBRICANT CODE, TEXAS CO. LOW TEMPERATURE 2346 GREASE, MIL-G-23827A. |
| . | L | LUBRICANT CODE, TEXAS CO. LOW TEMPERATURE 2346 GREASE, MIL-G-23827A. |
| . | L | NON-REMOVABLE SYNTHETIC RUBBER LIP SEAL. |
| . | M | SINGLE ROW - MAXIMUM CAPACITY - FILLING SLOT. |
| . | M | LUBRICANT CODE, BEACON 325, MIL-G-3278. |
| . | M | FILLING SLOT TYPE. |
| . | MF | SHIELD ON SIDE OPPOSITE FILLING SLOT (STANDARD) . |
| . | MFF | DOUBLE SHIELD (FILLING SLOT TYPE) . |
| . | MG | SNAP RING GROOVE ON FILLING SLOT SIDE (STANDARD) . |
| . | MGF | SNAP RING GROOVE ON FILLING SLOT SIDE, SHIELD OPPOSITE (STANDARD) . |
| . | MGFF | SNAP RING GROOVE ON FILLING SLOT SIDE, DOUBLE SHIELDED (STANDARD) . |
| . | MWI | FILLING SLOT TYPE WITH EXTENDED INNER RING. |
| . | N | NARROW INNER RING. |
| . | N | DOUBLE-ROW - LIGHT SERIES - NARROW WIDTH. |
| . | N | LUBRICANT CODE. SHELL ALVANIA 12. |
| . | P | LUBRICANT CODE, TEXAS CO. "REGAL AFB I2", MIL-L-7711. |
| . | Q | LUBRICANT CODE, TEXAS CO. ALL TEMPERATURE 1992 GREASE, MIL-G-10924. |
| . | R | SINGLE FAIRPRENE BUNA-N SEAL. |
| . | R | RETAINER. |
| . | R | SYNTHETIC RUBBER CONTACT SEAL . |
| . | RR | DOUBLE FAIRPRENE BUNA-N SEAL. |
| . | S | LUBRICANT CODE, N. Y. AND N. J. "S58". |
| . | S | EXTERNAL SELF -ALIGNING. |
| . | SA | INTERNAL SELF-ALIGNING. |
| . | SA | INTERNAL SELF-ALIGNING. |
| . | SS | STAINLESS STEEL. |
| . | W | WIDE OUTER RING. |
| . | X | ADAPTER BEARING. |
| . | X | STANDARD SLUSH. |
| . | X | ADAPTER TYPE. |
| . | X5 | SPECIAL WIDTH, INTEGRATED FELT SEAL. |
| . | XY | ADAPTER TYPE BEARING WITH SLEEVE. |
| . | XY | ADAPTER TYPE WITH SLEEVE. |
| . | Y | ADAPTER SLEEVE. |
| . | Y | ADAPTER SLEEVE. |
| . | Z | LUBRICANT CODE, ANDERSON L-245X, MIL-L-6085A. |
| A | . | CONTACT LINES ON DOUBLE-ROW CONVERGE ON OUTSIDE. |
| B | . | PILLOW BLOCK (BEARING ONLY) . |
| C | . | COUNTERBORED OUTER RING, SEPARABLE. |
| DU | . | PAIR OF BEARINGS UNIVERSALLY GROUND. |
| E | . | ELECTRIC MOTOR QUALITY. |
| F | . | FLANGED OUTER RING. |
| F | G | SHIELD AND SNAP RING GROOVE ON SAME SIDE (NON-STANDARD) . |
| F | GR | SHIELD AND SNAP RING GROOVE ON SAME SIDE, R SEAL OPPOSITE (NON-STANDARD). |
| F | M | SHIELD OF FILLING SLOT SIDE (NON-STANDARD) . |
| F | MG | SHIELD AND SNAP RING GROOVE ON FILLING SLOT SIDE (NON-STANDARD) . |
| F | MGR | SHIELD AND SNAP RING GROOVE ON FILLING SLOT SIDE, R SEAL OPPOSITE (NON-STANAARD) . |
| F | MR | SHIELD ON FILLING SLOT SIDE, R SEAL OPPOSITE (NON-STANDARD). |
| FB | . | MAGNETO TYPE . |
| FB | . | MAGNETO TYPE. |
| FOOO | . | FRONT WHEEL SERIES. |
| FS | . | SPECIAL DESIGN BEARING. |
| FS | . | SPECIAL DESIGN. |
| G | M | SNAP RING GROOVE ON SIDE OPPOSITE FILLING SLOT (NON-STANDARD) . |
| G | MF | SNAP RING GROOVE AND SHIELD ON SIDE OPPOSITE FILLING SLOT (NON-STANDARD) . |
| G | MFF | SNAP RING GROOVE ON SIDE OPPOSITE FILLING SLOT (NON-STANDARD) . |
| GF | MR | SNAP RING GROOVE ON SAME SIDE AS R SEAL, FILLING SLOT AND SHIELD OPPOSITE (NON-STANDARD) . |
| GF- | M | SNAP RING GROOVE ON SIDE OPPOSITE FILLING SLOT AND SHIELD (NON-STANDARD) . |
| GR | MF | SNAP RING GROOVE ON SAME SIDE AS SHIELD, FILLING SLOT AND R SEAL OPPOSITE (NON-STANDARD) . |
| I | . | DOUBLE-ROW SELF-ALIGNING WITH EXTENDED INNER RING. |
| I | . | SELF-ALIGNING, DOUBLE-ROW, RADIAL TYPE WITH EXTENDED INNER RING. |
| LS | . | LIGHT SERIES - INCH DIMENSIONS. |
| LS | . | LIGHT INCH SERIES. |
| MS | . | MEDIUM SERIES - INCH DIMENSIONS. |
| MS | . | MEDIUM INCH SERIES. |
| MWI | . | WIDE INNER RING. |
| PB | . | BALL BEARING AND PILLOW BLOCK HOUSING ASSEMBLY. |
| PB | . | PILLOW BLOCK SERIES. |
| PF | . | DOUBLE-ROW FAN AND PUMP SHAFT BEARINGS. |
| PF | . | PUMP AND FAN TYPE. |
| PT | . | CARBON BEARING CLUTCH RELEASE. |
| R | . | SMALL INCH SERIES. |
| R | G | R SEAL AND SNAP RING GROOVE ON SAME SIDE (NON-STANDARD) . |
| R | GF | R SEAL AND SNAP RING GROOVE ON SAME SIDE, SHIELD OPPOSITE (STANDARD). |
| R | MF | R SEAL ON FILLING SLOT SIDE, SHIELD OPPOSITE (STANDARD). |
| R | MGF | R SEAL AND SNAP RING GROOVE ON FILLING SLOT SIDE, SHIELD OPPOSITE (STANDARD) . |
| RW | . | AUTOMOTIVE REAR WHEEL TYPE. |
| RW | . | REAR WHEEL SERIES. |
| S | . | EXTRA SMALL, INCH DIMENSIONS, FULL TYPE. |
| SOC | . | EXTENDED INNER RING, LOCKING COLLAR, LIGHT SERIES. |
| SOC | . | EXTENDED INNER RING WITH COLLAR. |
| SOC | H | EXTENDED INNER RING, LOCKING COLLAR, MEDIUM SERIES. |
| U | . | SINGLE BEARING UNIVERSALLY GROUND. |
| XLS | . | EXTRA LIGHT SERIES - INCH DIMENSIONS. |
| XLS | . | EXTRA LIGHT INCH SERIES . |
