| Prefix | Suffix | Definition |
| . | . | SEALS. |
| . | . | BACK-TO-BACK, FACE-TO-FACE OR IN TANDEM |
| . | 0 | NO PRELOAD REQUIREMENT (SINGLE ANGULAR CONTACT BEARING ONLY, NOT USED FOR DUPLEX MOUNTING) |
| . | 1 | ABEC— 1 TOLERANCES |
| . | 3 | ABEC-3 TOLERANCES |
| . | 5 | ABEC-5 TOLERANCES |
| . | 7 | ABEC-7 TOLERANCES |
| . | 9 | FINGERPRINT REMOVER PROCESS |
| . | 9 | ABEC-9 TOLERANCES (ULTRA-PRECISION TOLERANCES) |
| . | A | DIMENSIONAL AND/OR INTERNAL DEVIATION WHEN SUFFIXED TO STANDARD BEARING NUMBER |
| . | A | CORROSION PREVENTIVE COMPOUND STANDARD SLUSH |
| . | AL | AL GRADE STEEL BALL, AFBMA GRADE 25 TOLERANCES |
| . | AX | LUBRICANT-MIL-G-10924 |
| . | B | LUBRICANT MIL-G-18709 |
| . | B | DIMENSIONAL AND/OR INTERNAL DEVIATION WHEN SUFFIXED TO STANDARD BEARING NUMBER |
| . | BC | LUBRICANT MIL-G-3545 |
| . | BW | RUST PREVENTIVE SLUSH |
| . | BX | LUBRICANT-MIL-G-7421 |
| . | C | SODIUM SOAP GREASE — ANDOK "C" |
| . | C | DIMENSIONAL AND/OR INTERNAL DEVIATION WHEN SUFFIXED TO STANDARD BEARING NUMBER |
| . | CJ | LUBRICANT-MIL-G-23827 |
| . | CO | RUST PREVENTIVE MIL-C-11796, CLASS 3 |
| . | CY | SUPERMIL M-40 GREASE |
| . | D | DIMENSIONAL AND/OR INTERNAL DEVIATION WHEN SUFFIXED TO STANDARD BEARING NUMBER |
| . | DB | DUPLEX BEARING, BACK-TO-BACK MOUNTING. A MATCHED PAIR OF ANGULAR CONTACT BEARINGS WITH ADJACENT OUTER AND INNER RING FACES FLUSH GROUND TO PRELOAD REQUIREMENTS. |
| . | DF | DUPLEX BEARING, FACE-TO-FACE MOUNTING A MATCHED PAIR OF ANGULAR CONTACT BEARINGS WITH ADJACENT OUTER -AND INNER RING FACES FLUSH GROUND TO PRELOAD REQUIREMENTS |
| . | DR | SUPERMIL M-100 GREASE |
| . | DT | DUPLEX BEARING, TANDEM MOUNTING. A MATCHED SET OF ANGULAR CONTACT BEARINGS WITH ALL BEARING FACES FLUSH GROUND TO PRELOAD REQUIREMENTS FOR UNIVERSAL MOUNTING IN TANDEM (DT) , BACK-TO-BACK (DB) , OR FACE-TO-FACE (DF) |
| . | DU | #1996 UNITEMP 500 GREASE |
| . | E | DIMENSIONAL AND/OR INTERNAL DEVIATION WHEN SUFFIXED TO STANDARD BEARING NUMBER |
| . | E | LOW TEMPERATURE SYNTHETIC BASE GREASE CONFORMING TO MIL-G-3278 |
| . | F | BEARING PACKED 100 PERCENT FULL OF SPECIFIED GREASE |
| . | FD | VERSILUB G-300 GREASE |
| . | FT | PRESERVATION OIL, MIL-C-8188 |
| . | FX | GREASE, MIL-G-15719 |
| . | G | (USE SAME DESCRIPTION AS SUFFIX D ABOVE) |
| . | HA | GREASE MIL-G-18709 |
| . | HB | SHIP BEARING DRY (NO LUBE) |
| . | HE | RYKON #2 GREASE |
| . | J | SPECIAL FEATURES |
| . | J | INSTRUMENT OIL MIL-L-6085 |
| . | KE | ALVANIA EP-2 GREASE |
| . | KJ | GREASE, MIL-G-25013 |
| . | KW | GREASE, MIL-G-3545 |
| . | L | LOOSE INTERNAL FIT-UP OR AXIAL PLAY (END-PLAY) -RADIAL TYPE BEARINGS |
| . | LD | GREASE, MIL-G-3545 |
| . | LIA | LOOSE INTERNAL FIT-UP (L) , ABEC-1 TOLERANCES (1), RUST PREVENTIVE SLUSH (A) |
| . | LM | DTE 797 TURBINE OIL |
| . | LR | LOOSE RADIAL CLEARANCE (INTERNAL FIT-UP) (AFBMA SYMBOL 3) |
| . | MR | MINIMUM RADIAL INTERNAL CLEARANCE (AFBMA SYMBOL 2) |
| . | MS | TURBINE OIL, MIL-L-23699 |
| . | MV | GREASE, MIL-G-81322 |
| . | MZ | SUPERMIL M-125 |
| . | N | EXTRA-LOOSE END PLAY |
| . | NX | GREASE, MIL-G-27617 |
| . | P | FOLLOWED BY A NUMBER INDICATES WRAP/PACK VARIATION. CONSULT NDH FOR SPECIFIC CASE. |
| . | PC | ANDOK 260 GREASE |
| . | PX | STEEL BALL AFBMA GRADE 10 |
| . | RS | ALVANIA EPB S2 GREASE |
| . | RV | SRI #2 GREASE |
| . | RW | KRITTOX 240AB GREASE |
| . | RX | SUNAPLEX 872 EP GREASE |
| . | U | OIL, MIL-L-7870 |
| . | V | SNAP RING LOCATED ON OPPOSITE SIDE FROM STANDARD |
| . | W | INWARDLY CONVERGENT CONTACT ANGLE (DOUBLE-ROW BEARING) |
| . | X | MEDIUM PRELOAD (ANGULAR CONTACT TYPE BEARINGS) |
| . | X | STANDARD END PLAY OR INTER FIT-UP (RADIAL TYPE BEARINGS) |
| . | XLA | STANDARD INTERNAL FIT-UP (X), ABEC-1 TOLERANCES (1), RUST PREVENTIVE SLUSH (A) FREER SEAL FIT-UP (88000 SERIES PROPELLER SHAFT BEARINGS) |
| . | XR | STANDARD INTERNAL FIT-UP (RADIAL PLAY) (AFBMA SYMBOL O) |
| . | Y | LOW SPEED NOISE TEST (FOLLOWS INTERNAL FIT-UP OR PRELOAD SYMBOL) |
| . | Z | ALVANIZ 13 GREASE |
| 4 | . | SNAP RING MOUNTED ON OUTER RING OF BEARING |
| 7 | . | SINGLE SHIELDED BEARING |
| 77 | . | DOUBLE SHIELDED BEARING |
| 8 | . | SINGLE SEALED BEARING (LABYRINTH TYPE FELT SEAL) |
| 88 | . | DOUBLE SEALED BEARING (LABYRINTH TYPE FELT SEALS) |
| 9 | . | SINGLE SEALED BEARING (SYNTHETIC RUBBER CONTACT TYPE SEAL) |
| 99 | . | DOUBLE SEALED BEARING (SYNTHETIC RUBBER CONTACT TYPE SEALS) |
| A | . | ADAPTER BEARING, NO SEALS, INDUSTRY STANDARD WIDTHS, ECCENTRIC LOCKING COLLAR. |
| A | . | EXTERNAL GARTER SPRING SEAL - PURAPSHAFT, IMPELLER END. |
| AB | . | ADAPTER BEARING WITH WIDE I.R., INDUSTRY STANDARD WIDTHS, SET SCREW LOCKING TYPE. |
| AG | . | AGRICULTURAL BEARING |
| AS | . | DISC HARROW BEARING WITH AGRICULTURAL TYPE SEAL. |
| B | . | INTERNAL GARTER SPRING SEAL - PUMP SHAFT. |
| C | . | METAL SLINGER-TYPE SEAL |
| CB | . | CONVEYOR ROLL BEARING. A SPECIAL BALL BEARING PERMANENTLY SEALED AND DESIGNED FOR USE IN CONVEYOR ROLL ASSEMBLIES |
| CF | . | CAM FOLLOWER "BEARING |
| CS | . | CONVEYOR STUB SHAFT |
| CT | . | CLUTCH THROWOUT BEARING |
| CWC | . | METAL SLINGER TYPE SEAL AND WIDE OUTER RING |
| D | . | BEARING WITH TWO SEALS OF METAL SLINGER AND FELT CONSTRUCTION (REAR C2681WHEEL APPLICATION) |
| EX | . | EXPERIMENTAL (MAY NEVER HAVE BEEN PRODUCED) |
| F | . | FLUSH TYPE ANGULAR CONTACT BEARING DESIGNED TO SUPPORT PRIMARILY RADIAL LOAD |
| F | . | FULL COMPLEMENT OF BALLS, RETAINERLESS TYPE BEARING |
| FL | . | PRESSED METAL FLANGE MOUNT, USED IN PAIRS ON A SPHERICAL O.D. BEARING |
| G | . | OUTER RING O.D. GROOVE OTHER THAN SNAP RING (LUBRICATION GROOVE, ETC.) |
| H | . | ANGULAR CONTACT BEARING, 25 DEGREE ANGLE OF CONTACT (OLOO AND 20000 SERIES) |
| J | . | SNAP ON INNER RING (ANGULAR CONTACT BEARINGS) |
| L | L | LIGHT PRELOAD (DUPLEXED ANGULAR CONTACT TYPE BEARINGS-FOLLOWS SUFFIXES DB, DF OR DT) |
| LC | . | ADAPTER BEARING SHIPPED WITHOUT ECCENTRIC COLLAR. |
| MG | . | MOST GUIDE BEARING SERIES |
| N | . | FLANGED OUTER RING |
| ND | . | MAGNETO BEARING (SEPARABLE TYPE) |
| NF | . | FLANGED OUTER RING, FLUSH TYPE ANGULAR CONTACT BEARING DESIGNED TO SUPPORT PRIMARILY RADIAL LOAD |
| NM | . | SEPARABLE FLANGED OUTER RING, ANGULAR CONTACT BEARING |
| P | . | PUMP SHAFT BEARING. SEAL PREFIX BEFORE BEARING (EG. 88P, 99PP, 98P, A99P, AB9P, ETC.) |
| PF | . | AGRICULTURAL IDLER UNIT FOR FLAT BELT |
| PV | . | AGRICULTURAL IDLER UNIT FOR V-BELT |
| Q | . | NON-METALLIC SEPARATOR (RETAINER) |
| R | . | RELUBRICATION FEATURE |
| R | . | RETAINER TYPE, INCH SERIES |
| R88A | . | SLEEVE AND NUT TYPE ADAPTER BEARING WITH PROVISION FOR INJECTION RE LUBRICATION. |
| RA | . | ADAPTER BEARING TYPE A WITH RELUBE HOLES, NO SEALS. |
| RAS | . | HEAVY DUTY DISC HARROW SEAL BEARING WITH RELUBE HOLES IN O.D. OF OUTER RING. |
| RFL | . | PRESSED METAL FLANGE PAIR WITH LUBRICATION FITTING USED ON RELUBE TYPE SPHERICAL O.D. BEARING. |
| RGA | . | ADAPTER BEARING RA PLUS RELUBE GROOVE. |
| RGTA | . | ADAPTER BEARING RTA PLUS RELUBE GROOVE |
| RGWA | . | ADAPTER BEARING RWA PLUS RELUBE GROOVE |
| RGWAB | . | ADAPTER BEARING RKAB PLUS RELUBE GROOVE |
| RGZA | . | ADAPTER BEARING RZA PLUS RELUBE GROOVE |
| RS | . | REMOVABLE SHIELD (S) , SHIELDED BEARING |
| RTA | . | ADAPTER BEARING SAME AS TA EXCEPT WITH RELUBE HOLES ON O.D. |
| RW | . | REAR WHEEL BEARING. |
| RWA | . | ADAPTER BEARING, WA EXCEPT WITH RELUBE HOLES ON O.D. ON SIDE OPPOSITE ECCENTRIC COLLAR. |
| RWAB | . | ADAPTER BEARING, WAB EXCEPT WITH RELUBE HOLES ON O.D. ON SIDE OPPOSITE ECCENTRIC COLLAR. |
| RWE | . | WE ADAPTER BEARING WITH RELUBE HOLES ON O.D. ON SIDE OPPOSITE ECCENTRIC COLLAR |
| RZA | . | ADAPTER BEARING ZA EXCEPT WITH RELUBE HOLES ON O.D. ON SIDE OPPOSITE ECCENTRIC COLLAR. |
| S | . | SPECIAL PRELOAD, ANGULAR CONTACT BEARING |
| S | . | SPECIAL INTERNAL FIT-UP (RADIAL BEARING) |
| SR | . | STAINLESS STEEL RETAINER |
| SS | . | STAINLESS STEEL BEARING |
| T | . | HEAVY PRELOAD (ANGULAR CONTACT BEARING) |
| T | . | TIGHT INTERNAL FIT-UP (RADIAL BEARING) |
| T | . | IDENTIFIES BEARING ASSEMBLED WITH A NOTCH-RIDING ARMOR-CARD SEAL OTHER THAN ADAPTER OR CAM FOLLOWER BEARING. |
| TA | . | ADAPTER BEARING, TYPE A WITH ARMOR-GARD SEALS. |
| TM | . | TEXTILE BEARING, MISCELLANEOUS |
| TP | . | TEXTILE PULLEY BEARING |
| TS | . | TEXTILE SPINDLE BEARING |
| U | . | SINGLE ANGULAR CONTACT BEARING DUPLEX GROUND FOR UNIVERSAL MOUNTING |
| V | . | BRONZE MACHINED SEPARATOR (RETAINER) |
| WA | . | ADAPTER BEARING, TYPE A PLUS WIDE INNER RING AND LAND RIDING ARMOR-GARD |
| WAB | . | ADAPTER BEARING, TYPE AB PLUS WIDE INNER RING AND LAND RIDING ARMOR-GARD SEALS. |
| WD | . | SEPARATOR (RETAINER) , PRESSED BRONZE OR BRONZE-CLAD STEEL RING CONTROLLED |
| WE | . | ADAPTER BEARING WITH WIDE I.R., NDH WIDTH O.K., LAND RIDING SEALS AND SEAL GUARDS ECCENTRIC LOCKING COLLAR |
| WE | . | WIDE OUTER RING ON SEALED BEARING |
| X | . | FREER SEAL FIT-UP (88000 SERIES PROPELLER SHAFT BEARINGS) |
| XD | . | FREER SEAL FIT-UP (88000 SERIES PROPELLER SHAFT BEARINGS) |
| Z | . | REMOVABLE MOLDED SYNTHETIC RUBBER NOTCH RIDING SEALS. |
| ZA | . | ADAPTER BEARING, TYPE A WITH SENTRI-SEALS. |
