| Prefix | Suffix | Definition |
| . | A (2ND POS) | "A" SERIES, STANDARD OVERSIZE O.D. AND I.D., SMALL IDENTIFICATION GROOVE IN O.D. |
| . | B (1ST POS) | PLAIN CYLINDRICAL OUTER RACE, COUNTER BORE IN I.D. BOTH ENDS . |
| . | B (2ND POS) | SPECIAL FEATURES. |
| . | B (3RD POS) | SPECIAL FEATURES. |
| . | C (1ST POS) | PLAIN CYLINDRICAL OUTER RACE. COULD APPEAR IN THE 2ND POSITION IF PRECEDED BY THE LETTER "G". |
| . | C (2ND POS) | OVERSIZE I.D., SMALL IDENTIFICATION GROOVE IN O.D. |
| . | D (1ST POS) | SINGLE FLANGE CYLINDRICAL OUTER RACE. COULD APPEAR IN THE 2ND POSITION IF PRECEDED BY THE LETTER "G". |
| . | D (2ND POS) | SPECIAL WIDTH ETC. |
| . | D (3RD POS) | SPECIAL WIDTH ETC. |
| . | E (1ST POS) | DOUBLE FLANGE CYLINDRICAL OUTER RACE. COULD APPEAR IN THE 2ND POSITION IF PRECEDED BY THE LETTER "G". |
| . | E (2ND POS) | OVERSIZE I.D., SPECIAL WIDTH, ETC. |
| . | E (3RD POS) | OVERSIZE I.D., SPECIAL WIDTH, ETC. |
| . | F (2ND POS) | RIVETED STEEL CAGE, USED WITH M-B TYPE OUTER RACE. |
| . | G (1ST POS) | STANDARD SNAP RING GROOVE IN O.D. |
| . | G (2ND POS) | SNAP RING GROOVE IN CENTER OF O.D. |
| . | G (3RD POS) | SNAP RING GROOVE IN O.D. SIDE. (APPLIES TO "MAX-PAK" . ) |
| . | G (4TH POS) | SNAP RING GROOVE IN O.D. SIDE. (APPLIES TO "MAX-PAK" . ) |
| . | H (2ND POS) | BLIND HOLE IN O.D., OVERSIZE I.D., WIDTH, ETC. |
| . | H (3RD POS) | BLIND HOLE IN O.D. |
| . | HH (3RD POS) | BLIND HOLE IN O.D. CENTER. (APPLIES TO "MAX-PAK".) |
| . | J (1ST POS) | ONE PIECE MACHINED BRONZE CAGE. |
| . | J (2ND POS) | ONE PIECE MACHINED BRONZE CAGE. |
| . | J (3RD POS) | ONE PIECE MACHINED BRONZE CAGE. |
| . | J (4TH POS) | ONE PIECE MACHINED BRONZE CAGE. |
| . | J (5TH POS) | ONE PIECE MACHINED BRONZE CAGE. |
| . | K (1ST POS) | DOUBLE FLANGE CYLINDRICAL OUTER RACE, SPHERICAL O.D. (SELF-ALIGNING TYPE.) |
| . | L (1ST POS) | RIVETED STEEL CAGE. FLANGE GUIDED. |
| . | L (2ND POS) | RIVETED STEEL CAGE. FLANGE GUIDED. |
| . | L (3RD POS) | RIVETED STEEL CAGE. FLANGE GUIDED. |
| . | L (4TH POS) | RIVETED STEEL CAGE. FLANGE GUIDED. |
| . | L (5TH POS) | RIVETED STEEL CAGE. FLANGE GUIDED. |
| . | M (2ND POS) | FULL COMPLEMENT BEARING, NO CAGE. |
| . | M (3RD POS) | FULL COMPLEMENT BEARING, NO CAGE. |
| . | M (4TH POS) | FULL COMPLEMENT BEARING, NO CAGE. |
| . | N (2ND POS) | OUTER RACE PLATE, USED WITH M-S TYPE OUTER RACE. |
| . | N (3RD POS) | OUTER RACE PLATE, USED WITH M-S TYPE OUTER RACE. |
| . | N (4TH POS) | OUTER RACE PLATE, USED WITH M-S TYPE OUTER RACE. |
| . | O (2ND POS) | OVERSIZE O.D. AND I.D., IDENTIFICATION GROOVE IN O.D. |
| . | P (1ST POS) | PLAIN CYLINDRICAL OUTER RACE, SPHERICAL I.D. .(SELF—ALIGNING TYPE.) |
| . | R (2ND POS) | ALIGNING RING FOR "K" OR "P" TYPE OUTER RACE. OR SPECIAL O.D. RADIUS. |
| . | R (4TH POS) | SNAP RING ASSEMBLED WITH PART. |
| . | R (5TH POS) | SNAP RING ASSEMBLED WITH PART. |
| . | S (1ST POS) | SHORT SINGLE FLANGE CYLINDRICAL OUTER RACE. |
| . | S (3RD POS) | SPECIAL FEATURES. |
| . | T (1ST POS) | PLAIN CYLINDRICAL OUTER RACE, TWO SNAP RINGS IN I.D. FOR ROLLER RETAINMENT. |
| . | T (2ND POS) | CLOSE TOLERANCE ON DIMENSION, "FROM END OF ROLLER TO FACE OF INNER RACE." |
| . | T (3RD POS) | CLOSE TOLERANCE ON DIMENSION, "FROM END OF ROLLER TO FACE OF INNER RACE." |
| . | T (4TH POS) | CLOSE TOLERANCE ON DIMENSION, "FROM END OF ROLLER TO FACE OF INNER RACE." |
| . | T (5TH POS) | CLOSE TOLERANCE ON DIMENSION, "FROM END OF ROLLER TO FACE OF INNER RACE." |
| . | U (1ST POS) | SINGLE FLANGE CYLINDRICAL OUTER RACE, ONE SNAP RING IN I.D. FOR ROLLER RETAINMENT. |
| . | V (2ND POS) | ONE PIECE PRESSED STEEL CAGE. |
| . | V (3RD POS) | ONE PIECE PRESSED STEEL CAGE. |
| . | V (4TH POS) | ONE PIECE PRESSED STEEL CAGE. |
| . | V (5TH POS) | ONE PIECE PRESSED STEEL CAGE. |
| . | W (2ND POS) | SPECIAL WIDTH OUTER RACE PLATE. USED WITH M-S TYPE OUTER RACE. |
| . | W (3RD POS) | SPECIAL WIDTH OUTER RACE. |
| . | W (4TH POS) | SPECIAL WIDTH OUTER RACE. |
| . | X (1ST POS) | RIVETED STEEL CAGE. ROLL GUIDED. (APPLIES TO "MAX-PAK".) |
| . | X (2ND POS) | RIVETED STEEL CAGE. ROLL GUIDED. (APPLIES TO "MAX-PAK".) |
| . | X (2ND POS) | SPECIAL WIDTH OUTER RACE PLATE. USED WITH M-S TYPE OUTER RACE. |
| . | X (3RD POS) | RIVETED STEEL CAGE. ROLL GUIDED. (APPLIES TO "MAX-PAK".) |
| . | X (3RD POS) | SPECIAL WIDTH OUTER RACE PLATE. USED WITH M-S TYPE OUTER RACE. |
| . | X (4TH POS) | RIVETED STEEL CAGE. ROLL GUIDED. (APPLIES TO "MAX-PAK".) |
| . | X (4TH POS) | SPECIAL WIDTH OUTER RACE PLATE. USED WITH M-S TYPE OUTER RACE. |
| . | X (5TH POS) | RIVETED STEEL CAGE. ROLL GUIDED. (APPLIES TO "MAX-PAK".) |
| . | Z (2ND POS) | SPECIAL WIDTH OUTER RACE. |
| 5 (3RD POS) | . | DOUBLE WIDTH INNER RACE (5000, 5200, AND 5300 SERIES). |
| 7 (3RD POS) | . | STANDARD WIDTH INNER RACE (7200 AND 7300 SERIES) . |
| A (2ND POS) | . | PLAIN CYLINDRICAL INNER RACE. |
| B (3RD POS) | . | SPECIAL FEATURES, BORE, RADIUS, WIDTH ETC. |
| B (4TH POS) | . | SPECIAL FEATURES, BORE, RADIUS, WIDTH ETC. |
| C (3RD POS) | . | SPECIAL FEATURES, BORE, RADIUS, WIDTH ETC. (APPLIES TO "MAX-PAK".} |
| D (3RD POS) | . | 5 MM UNDERSIZE BORE. (APPLIES TO "MAX-PAK".) |
| D (3RD POS) | . | SPECIAL INNER RACE PLATE. USED WITH MS- OR ME-TYPE INNER RACE. |
| D (4TH POS) | . | SPECIAL INNER RACE PLATE. USED WITH MS- OR ME-TYPE INNER RACE. |
| E (2ND POS) | . | PLAIN CYLINDRICAL INNER RACE, NARROWER THAN STANDARD. |
| E (3RD POS) | . | 10 MM UNDERSIZE BORE. (APPLIES TO "MAX-PAK".) |
| F (3RD POS) | . | 15 MM UNDERSIZE BORE. (APPLIES TO "MAX-PAK".) |
| F (3RD POS) | . | SPECIAL SINGLE FLANGE CYLINDRICAL INNER RACE. |
| G (3RD POS) | . | 20 MM UNDERSIZE BORE. (APPLIES TO "MAX-PAK".) |
| H (3RD POS) | . | HOLE IN O.D. (APPLIES TO "MAX-PAK".) |
| J (2ND POS) | . | METRIC BEARING WITH INNER RACE AND OUTER RACE.REMOVED. CAGE PILOTS ON SHAFT. |
| J (3RD POS) | . | METRIC BEARING WITH INNER RACE AND OUTER RACE REMOVED. CAGE PILOTS IN HOUSING. |
| L (3RD POS) | . | SPECIAL WIDTH ONLY. (APPLIES TO "MAX-PAK".) |
| M (1ST POS) | . | METRIC BEARING WITH INNER RACE AND OUTER RACE REMOVED. CAGE PILOTS IN HOUSING. |
| M (1ST POS) | . | METRIC BEARING WITH INNER RACE AND OUTER RACE.REMOVED. CAGE PILOTS ON SHAFT. |
| M (1ST POS) | . | DENOTES METRIC SERIES. |
| N (4TH POS) | . | INNER RACE PLATE. USED WITH MS- OR ME-TYPE INNER RACE. |
| N (3RD POS) | . | INNER RACE PLATE. USED WITH MS- OR ME-TYPE INNER RACE. |
| O (2ND POS) | . | METRIC BEARING WITH INNER RACE AND OUTER RACE REMOVED. CAGE PILOTS IN HOUSING. |
| R (4TH POS) | . | BORE RADIUS ON OPPOSITE SIDE OF FLANGE. |
| R (1ST POS) | . | SPECIAL SERIES. A NON-AFBMA STANDARD. |
| R (2ND POS) | . | SINGLE FLANGE CYLINDRICAL INNER RACE. |
| R (3RD POS) | . | SPECIAL BORE RADIUS BOTH ENDS. |
| S (4TH POS) | . | 5 OR 10 MM SMALLER BORE. |
| S (2ND POS) | . | SHORT SINGLE FLANGE CYLINDRICAL INNER RACE. |
| S (3RD POS) | . | 5 OR 10 MM SMALLER BORE. |
| T (4TH POS) | . | 5 OR 10 MM SMALLER BORE. |
| T (1ST POS) | . | SPECIAL CONVEYOR WHEEL BEARING A NON-AFBMA STANDARD. |
| T (3RD POS) | . | 5 OR 10 MM SMALLER BORE. |
| U (2ND POS) | . | DOUBLE FLANGE CYLINDRICAL INNER RACE. |
| U (3RD POS) | . | SPECIAL FEATURES, SMALL BORE, ETC. |
| W (1ST POS) | . | HIGH CAPACITY BEARING - "MAX-PAK". |
| W (2ND POS) | . | HIGH CAPACITY BEARING - "MAX-PAK". |
| W (2ND POS) | . | SPECIAL CONVEYOR WHEEL BEARING A NON-AFBMA STANDARD. |
| W (3RD POS) | . | HIGH CAPACITY BEARING - "MAX-PAK". |
| X (2ND POS) | . | ROLLER ASSEMBLY. "X" BAR DESIGN. (APPLIES TO "MAX-PAK".) |
| X (3RD POS) | . | SPECIAL FEATURES. |
| Y (3RD POS) | . | SINGLE FLANGE CYLINDRICAL INNER RACE WITH RETAINING RING IN O.D. (NON-SEPARABLE TYPE) |
