| Prefix | Suffix | Definition |
| . | J | FITTING BETWEEN HOUSING AND BEARING |
| . | K | 1/12 TAPERED BORE |
| . | LL | BRONZE MACHINED CAGE |
| . | LLA | SILICON RUBBER SEAL |
| . | LLC | DOUBLE CONTACT LIP SEAL |
| . | LLX | TIGHT CONTACT SEALS MORE THAN L-SEALS |
| . | M(N) | HOUSING WITH KEY GROOVE OR NOTCH HOLE |
| . | MX | SURFACE TREATMENT OF CAGE |
| . | N | CAST STEEL |
| . | N | SNAP RING GROOVE WITHOUT RING |
| . | NL | PEARLITE CAST STEEL |
| . | NR | SNAP RING ON OUTER RING |
| . | NRS | SNAP RING ON (REVERSE LOCATION) |
| . | NS | SNAP RING GROOVE (REVERSE LOCATION) |
| . | NX | OTHER METAL |
| . | P(N) | WITH ADDITIONAL ACCESSORY |
| . | PXN | SPECIAL TOLERANCE (FROM PX1) |
| . | S | SLEEVE WITH BORE OF 1/8 INCH INCREMENT |
| . | U | BOTH SIDES WITH NON-CONTACT SEALS |
| . | VN | SPECIAL SPEC, AND REQUEST (FROM VI) |
| . | W | BEARING WITH KEY GROOVE OR NOTCH HOLE |
| . | W5 | SPECIAL SET SCREW |
| . | W6 | SPECIAL SET SCREW |
| . | W7(N) | SPECIAL SET SCREW |
| . | W8 | ASA UNIFY THREAD SET SCREW |
| . | WO | WITHOUT SET SCREW |
