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Part number system
| Prefix | Suffix | Definition | | A | . | BALL THRUST BEARINGS, FLAT RACE SURFACE, FLAT SEAT, WITH BRONZE BALL RETAINER. | | AA | . | BALL THRUST BEARINGS, GROOVED RACE SURFACE, FLAT SEAT, WITH SOLID MACHINED RETAINER, SPECIAL SERIES. | | AH | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT, SOLID MACHINED RETAINER, HEAVY SERIES. | | AL | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT, WITH SOLID MACHINED RETAINER, LIGHT SERIES. | | AM | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT, WITH SOLID MACHINED RETAINER, MEDIUM SERIES. | | B | . | LOCATING WASHER FOR USE WITH BALL THRUST BEARING (FOR TYPE BB BEARINGS) . | | B | . | BALL THRUST BEARING, BANDED OUTSIDE DIAMETER, GROOVED RACE SURFACE, FLAT SEAT, NO RETAINER. | | BB | . | BALL THRUST BEARING, GROOVED RACE SURFACE, SPHERICAL SEAT, SOLID MACHINED RETAINER, SPECIAL LIGHT SERIES. | | BH | . | BALL THRUST BEARING, GROOVED RACE SURFACE, SPHERICAL SEAT, SOLID MACHINED RETAINER, HEAVY SERIES. | | BL | . | BALL THRUST BEARING, GROOVED RACE SURFACE, SPHERICAL SEAT, SOLID MACHINED RETAINER, LIGHT SERIES. | | BM | . | BALL THRUST BEARING, GROOVED RACE SURFACE, SPHERICAL SEAT, SOLID MACHINED RETAINER, MEDIUM SERIES. | | C | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT, WITH BRONZE AND/OR PRESSED STEEL BALL RETAINER. | | CH | . | BALL THRUST BEARING, DOUBLE DIRECTION GROOVED RACE SURFACE, FLAT SEAT. MIDDLE WASHER LOCKED TO SHAFT, HEAVY SERIES. | | CL | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, FLAT SEAT. MIDDLE WASHER LOCKED TO SHAFT, LIGHT SERIES. | | CM | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, FLAT SEAT. MIDDLE WASHER LOCKED TO SHAFT, MEDIUM SERIES. | | D | . | BALL THRUST BEARING, BANDED OUTSIDE DIAMETER, GROOVED RACE SURFACE, FLAT SEAT, NO RETAINER. | | DH | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, SPHERICAL SEAT, MIDDLE WASHER LOCKED TO SHAFT, HEAVY SERIES. | | DL | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, SPHERICAL SEAT, MIDDLE WASHER LOCKED TO SHAFT, LIGHT SERIES. | | DM | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, SPHERICAL SEAT, MIDDLE WASHER LOCKED TO SHAFT, MEDIUM SERIES. | | E | . | ROLLER THRUST BEARING, FLAT SEAT, FLAT RACE SURFACES AND WITH SPHERICAL SEAT. | | EL | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, FLAT SEAT, MIDDLE WASHER LOCKED IN HOUSING, LIGHT SERIES. | | FL | . | BALL THRUST BEARING, DOUBLE DIRECTION, GROOVED RACE SURFACE, SPHERICAL SEAT, MIDDLE WASHER LOCKED IN HOUSING, LIGHT SERIES. | | H | . | LOCATING WASHER FOR USE WITH BALL THRUST BEARINGS (FOR TYPE BH AND DH BEARINGS) . | | L | . | LOCATING WASHER FOR USE WITH BALL THRUST BEARINGS (FOR TYPE BL, DL,AND FL BEARINGS). | | M | . | LOCATING WASHER FOR USE WITH BALL THRUST BEARINGS (FOR TYPE BM AND DM BEARINGS) . | | W | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT WITH BRONZE AND/OR PRESSED STEEL BALL RETAINER, MEDIUM SERIES. | | XW | . | BALL THRUST BEARING, GROOVED RACE SURFACE, FLAT SEAT WITH BRONZE AND/OR PRESSED STEEL BALL RETAINER, LIGHT TO MEDIUM SERIES. |
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