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Part number system
| Prefix | Suffix | Definition | | . | . | DESIGNATION) | | . | 0 | SPHERE-ROL, INDICATES STANDARD DIAMETRAL CLEARANCE •• | | . | 10 | CAGEROL, RETAINER NOT PENTRATE TREATED | | . | 100 | CAGEROL, SPLIT INTO TWO HALVES | | . | 20 | MULTIROL, NEW DESIGN, SPRING STEEL RINGS REPLACE ROLLED LIPS | | . | 30 | MULTIROL, MI INNERS , OLD STYLE LARGE DIAMETER RACE | | . | 9 | CAMROL, INDICATES CLOSE RUNNING CLEARANCE BETWEEN OUTER RING COUNTER-BORE AND FLANGE O.D. (0.003 INCH) | | . | A | 1. CAMROL, CAM FOLLOWER, RADIAL OIL HOLE OMITTED IN STEIN OR PLUGGED 2. SPHERE-ROL, WITH TAPERED BORE PLUS ADAPTER SLEEVE, LOCKNUT AND LOCKWASHER | | . | AL | ALUMINUM ALLOY RETAINER OR SEPARATOR | | . | B | CAMROL, CAM FOLLOWER, HEXAGONAL HOLE REPLACES SCREWDRIVER SLOT IN FLANGE END OF STEM | | . | C | STANDARD BEARING, ALL EXTERNAL SURFACES CHROME PLATED | | . | C2 | EPHERE-ROL, INDICATES DIAMETRAL CLEARANCE LESS THAN STANDARD | | . | C3 | SPHERE-ROL, INDICATES DIAMETRAL CLEARANCE LARGER THAN STANDARD | | . | C4 | SPHERE-ROL, INDICATES DIAMETRAL CLEARANCE LARGER THAN C3 | | . | CL | SPHERE-ROL, INDICATES DIAMETRAL CLEARANCE LESS THAN C2 -..S- | | . | CP | STANDARD BEARING WITH CHROME PLATED O.D., ALL OTHER EXPOSED SURFACES, AS MOUNTED, CADMIUM PLATED | | . | CR | STAINLESS STEEL (CORROSION-RESISTING) | | . | CU | COPPER ALLOY RETAINER OR SEPARATOR | | . | D | ROLLER BEARING PRECISION MATCHING IN GROUPS OF TWO OR MORE (*, NUMBER IN THIS POSITION INDICATES HOW MANY IN THE MATCHED GROUP WHEN THREE OR MORE ARE MATCHED) | | . | DB | OBSOLETE, SEE "R" | | . | DF | OBSOLETE, SEE "U" | | . | DO | UNIVERSALLY DUPLEXED BEARINGS | | . | DRV | NO LUBRICATION, PRESERVATIVE OPTIONAL | | . | DS | ROLLER BEARING SUPER PRECISION MATCHING IN GROUPS OF TWO OR MORE (*, NUMBER IN THIS POSITION INDICATES HOW MANY IN THE MATCHED GROUP WHEN THREE OR MORE ARE MATCHED) | | . | DT | OBSOLETE, SEE "T" | | . | E | SPHERE-ROL, INDICATES ENDPLAY FOR SHAFT EXPANSION | | . | F | 1. AIRFRAME BEARING, LUBRICATION HOLE IN OUTER RACE 2. PILLOW BLOCK SERIES, INDICATES BEARING FIXED IN HOUSING (NOT FLOATING) 3. SINGLE SHIELD (OBSOLETE SUFFIX) | | . | FE | IRON ALLOY RETAINER OR SEPARATOR | | . | FF | DOUBLE SHIELD (OBSOLETE SUFFIX) | | . | FFG | DOUBLE SHIELD WITH SNAP RING AND GROOVE ON OUTER RING O.D. (OBSOLETE SUFFIX) | | . | FG | SINGLE SHIELD, WITH SNAP RING AND GROOVE ON SIDE OPPOSITE SHIELD (OBSOLETE SUFFIX) | | . | FG-1 | SINGLE SHIELD, WITH SNAP RING AND GROOVE ON SAME SIDE AS SHIELD (OBSOLETE SUFFIX) | | . | G | 1. SNAP RING AND GROOVE ON OUTER RING O.D. (OBSOLETE SUFFIX) 2. MI INNER, (*, NUMBER IN THIS POSITION INDICATES O.D. LARGER THAN STANDARD BY 1/32 INCREMENTS) | | . | GH | SNAP RING WITH HOOK AND GROOVE ON OUTER RING O.D. (OBSOLETE SUFFIX) | | . | GO | SNAP RING GROOVE ONLY ON OUTER RING O.D. (OBSOLETE SUFFIX) | | . | J | AIRFRAME BEARING, OUTER O.D. AND O.D. CORNERS CHROME PLATED AND OTHER EXPOSED SURFACES CADMIUM PLATED AS MOUNTED | | . | K | SPHERE-ROL, WITH TAPERED BORE (1:12 TAPER ON DIAMETER) | | . | KE | SPHERE-ROL, TAPERED BORE, EXPANSION FEATURE | | . | KM | K-MONEL METAL | | . | LER | PILLOW BLOCK SERIES, LABYRINTH SEAL RING (PILLOW BLOCK COMPONENT PART) | | . | LH | LEFT HAND THREAD FOR CF CAM FOLLOWERS OF STANDARD CATALOG ITEM | | . | M | MAXIMUM CAPACITY OR LOADING GROOVE TYPE BALL BEARING | | . | N | NARROW | | . | NM | NARROW-MAXIMUM OR LOADING GROOVE TYPE BALL BEARING (OBSOLETE SUFFIX) | | . | NS | NON-SEPARABLE (SELF-CONTAINED) | | . | P | 1. STANDARD BEARING, ALL EXTERNAL SURFACES CADMIUM PLATED 2. AIRFRAME BEARING, EXPOSED SURFACES CADMIUM PLATED AS MOUNTED 3. PILLOW BLOCK SERIES, INDICATES PLUG TO CLOSE ONE END OF HOUSING | | . | PC | SYNTHETIC RETAINER OR SEPARATOR | | . | PEN | BLACK OXIDE FINISH | | . | PT | SYNTHETIC TIRE ON BEARING O.D. | | . | R | 1. RADIALLY FITTED GURNEY TYPE BEARINGS, OTHER 7000 SERIES (OBSOLETE) 2. PAIRED BEARINGS DUPLEX MOUNTED BACK-TO-BACK | | . | RS | •CAGEROL OR GUIDEROL, SEALED ON ONE SIDE, (SEAL LIP OUTSIDE OF BEARING) | | . | RSS | CAGEROL OR GUIDEROL, SEALED ON BOTH SIDES, (SE'AL LIP TO OUTSIDE OF BEARING) | | . | S | ############################################################################################################################################################################################################################################################### | | . | SEL | BEARING SELECTED FROM STOCK FOR SPECIAL TOLERANCE RANGE OR FEATURE | | . | SL | SPHERE-ROL, SEALED, LARGE BORE SIDE ONLY WITH TAPERED BORE | | . | SOL | "RS" DIMENSIONAL MO BEARINGS | | . | SR | PILLOW BLOCK SERIES, STABILIZING RING (PILLOW BLOCK COMPONENT PART) | | . | SRS | CAGEROL OR GUIDEROL, SEALED BOTH SIDES (ONE SEAL FACING INWARD, OTHER SEAL FACING OUTWARD) | | . | SS | 1. CAGEROL OR GUIDEROL , SEALED BOTH SIDES (SEAL LIPS TO INSIDE OF BEARING) 2. SPHERE-ROL, BOTH SIDES SEALED | | . | T | SPHERE-ROL, TEFLON SEAL (*, NUMBER IN THIS POSITION INDICATES SEAL CONFIGURATION) | | . | T | 1. CAMROL , CAM FOLLOWER, AXIAL LUBRICATION HOLE IN STEM (SPECIAL FEATURE ON SMALL CAM FOLLOWERS) 2. BALL BEARINGS DUPLEX MOUNTED IN TANDEM 3. RETAINER, STEEL, TUFFTRIDAD | | . | U | DUPLEX MOUNTED, FACE-TO-FACE | | . | UNA | UNASSEMBLED BEARING WITH ALL COMPONENTS | | . | V733 | SPHERE-ROL, WITH ANNULAR GROOVE AND LUBRICATION HOLES IN O.D. | | . | W | WIDE WIDTH | | . | W/O | WITHOUT A STANDARD COMPONENT (SEALS FOR EXAMPLE) | | . | W20 | SPHERE-ROL, WITH LUBRICATION HOLES IN BEARING O.D. | | . | W22 | SPHERE-ROL, WITH SELECTED O.D. | | . | Y | 1. ' AIR FRAME BEARING, ANNULAR LUBRICATION GROOVE IN BORE AND LUBE HOLES IN INNER RING ' 2. SEE BELOW | | . | Z | AIRFRAME BEARING, ANNULAR LUBRICATION GROOVE IN O.D. AND LUBE HOLES IN OUTER RING | | +E | . | CAMROL, CAM FOLLOWER, ECCENTRIC BUSHING PRESSED ON STEM | | +L | . | CAMROL, WITH LUBRI-DISC FEATURE | | AN | . | SPHERE-ROL, LARGE LOCKNUT (SEE "N" PREFIX) | | ASMO | . | MULTIROL, SINGLE-ROW, OUTER RACE AND ROLLER ASSEMBLY, SELF-ALIGNING, SPHERICAL HOUSING AND O.D. | | B | . | BALL BEARING FOR PILLOW BLOCK (MFG. FOR BROWNING) | | BA | . | ANNULAR BALL BEARING, SINGLE-ROW, COUNTERBORED OUTER RING, ANGULAR CONTACT, CONTACT ANGLE 22 DEGREES TO 32 DEGREES (THIS IS AN AFBMA DESIGNATION) | | BB | . | SPECIAL BALL BEARINGS | | BC | . | ANNULAR BALL BEARING, SINGLE-ROW, RADIAL, NON-LOADING GROOVE SELF-CONTAINED (THIS IS AND AFBMA DESIGNATION) | | BH | . | ANNULAR BALL BEARING, SINGLE-ROW, COUNTERBORED OUTER RING, RADIAL (THIS IS AN AFBMA DESIGNATION) | | BM | . | BALL BEARING FOR PILLOW BLOCK (MFG. FOR T.B. WOOD) | | BN | . | ANNULAR BALL BEARING, SINGLE-ROW, COUNTERBORED OUTER RING, ANGULAR CONTACT, CONTACT ANGLE 10 DEGREES TO 22 DEGREES (THIS IS AN AFBMA | | BR | . | SPECIAL ROLLER BEARING | | BT | . | ANNULAR BALL BEARING, SINGLE-ROW, COUNTERBORED OUTER RING, ANGULAR CON-TACT, CONTACT ANGLE 32 DEGREES TO 45 DEGREES (THIS IS AN AFBMA DESIGNATION) | | C+ | . | CAMROL, WITH CROWN RADIUS ON OUTER RING O.D. (PREFIX LETTER BEFORE BASIC BEARING TYPE) | | CF | . | CAMROL, CAM FOLLOWER, FULL COMPLIMENT ROLLER BEARING, WITH INTEGRAL STUD | | CFH | . | CAMROL, CAM FOLLOWER, FULL COMPLIMENT ROLLER BEARING WITH INTEGRAL HIGH CAPACITY STUD | | CT | . | SPECIAL ROLLER BEARING UTILIZING CENTER GUIDED ROLLER ASSEMBLY | | CYR | . | CAMROL, YOKE ROLLER, FULL COMPLIMENT ROLLER BEARING WITH INNER RACE FOR YOKE MOUNTING. | | EMRF | . | CAGEROL, CAM FOLLOWER, HEAVY SECTION OUTER WITH INNER RING | | F+ | . | PILLOW BLOCK SERIES, INDICATES 4-BOLT BASE ON SIZES NOT ALREADY HAVING THAT FEATURE (PREFIX LETTER BEFORE BASIC PILLOW BLOCK TYPE) | | GR | . | GUIDEROL, HEAVY DUTY ROLLER BEARING, SELF-CONTAINED, OUTER RACE AND CENTER GUIDED ROLLER ASSEMBLY. MT SERIES — INCH SERIES, AND CT SERIES - METRIC SERIES. NO INNER RACE. | | GRI | . | GUIDEROL, WITH SEPARABLE INNER RACE. METRIC SIZES. | | GTR | . | DRAWN CUP ROLLER BEARING, WITH ONE PIECE RETAINER, SINGLE-ROW OR ROLLERS, NO INNER, OPEN ENDS, PRECISION GROUND O.D. REGULAR ROLLER SERIES. | | GTRH | . | DRAWN CUP ROLLER BEARING, ONE PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, OPEN ENDS, PRECISION GROUND O.D. , LARGE ROLLER SERIES. | | GTRL | . | DRAWN CUP ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, OPEN ENDS, PRECISION GROUND O.D., EXTRA LARGE ROLLER SERIES. | | H+ | . | CAM FOLLOWER, STEM HEAT TREATED FOR HIGH STRENGTH (PREFIX LETTER BEFORE BASIC BEARING NUMBER) | | I | . | INNER RACE ONLY FOR GR-CT SERIES, GUIDEROL ROLLER BEARING MULTIROL, SINGLE-ROW, INNER RACE AND ROLLER ASSEMBLY, END" PLATE TYPE (OBSOLETE, SEE "SR") | | IRD | . | MULTIROL, DOUBLE-ROW, INNER RACE AND ROLLER ASSEMBLY, END PLATE TYPE (OBSOLETE, SEE "SR") | | MI | . | INNER RACE ONLY FOR GR, MO, MR SERIES BEARINGS | | MO | . | MULTIROL, FULL TYPE ROLLER BEARING, SINGLE-ROW OUTER RACE AND ROLLER ASSEMBLY, SOLID LIP TYPE | | MR | . | 1. CAGEROL, HEAVY DUTY ROLLER BEARING, ONE PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, REGULAR ROLLER SERIES 2. CAGEROL, SPECIAL BEARING | | MRF | . | CAGEROL CAM FOLLOWER, CAGEROL BEARING WITH HEAVY OUTER RING | | MRH | . | CAGEROL, HEAVY DUTY ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, LARGE ROLLER SERIES | | MRN | . | CAGEROL, HEAVY DUTY ROLLER BEARING, ONE-PIECE MOLDED RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, REGULAR ROLLER SERIES | | MRS | . | CAGEROL, HEAVY DUTY ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, REGULAR ROLLER SERIES, NON-PRECISION BEARING | | MT | . | GUIDEROL, INCH SERIES | | N | . | SPHERE-ROL, LOCK-NUT (SEE "AN" PREFIX) | | NBC | . | AIRFRARAE HEAVY DUTY TYPE ROLLER BEARING, NON-SEPARABLE, SINGLE-ROW OF ROLLERS | | NBE | . | AIRFRAME HEAVY DUTY ROLLER BEARING, SELF-ALIGNING, SINGLE-ROW OF ROLLERS | | NBK | . | AIRFRAME HEAVY DUTY TYPE ROLLER BEARING, SELF-ALIGNING DOUBLE-ROW OF ROLLERS | | NBL | . | AIRFRAME HEAVY DUTY TYPE TRACK ROLLER, ROLLER BEARING, NONSEPARABLE, DOUBLE-ROW OF ROLLERS | | NYR | . | MOLDED SYNTHETIC RETAINER AND ROLLER ASSEMBLY ONLY | | OD | . | MULTIROL ROLLER BEARING, DOUBLE-ROW, OUTER RACE AND ROLLER ASSEMBLY, END PLATE TYPE (OBSOLETE, SEE "SR") | | OS | . | MULTIROL, ROLLER BEARING, SINGLE-ROW, OUTER RACE AND ROLLER ASSEMBLY, END PLATE TYPE (OBSOLETE, SEE "SR") | | R | . | 1. CAMROL, RETAINER TYPE (LETTER MUST BE USED WITH BASIC CAMROL PREFIX) 2. RETAINER, ONE-PIECE, SINGLE-ROW, MACHINED | | RD | . | MULTIROL, SELF-CONTAINED, DOUBLE-ROW, OUTER RACE AND NEEDLE ASSEMBLY, (END PLATE TYPE) AND INNER RACE | | RF | . | CYLINDRICAL ROLLER BEARING, ONE LIP OUTER RING, TWO LIP INNER RING, ROLLERS AND CAGE, OUTER RING SEPARABLE | | RJ | . | CYLINDRICAL ROLLER BEARING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLERS AND CAGE, INNER RING SEPARABLE | | RMI | . | INNER RACE (WITH REDUCED O.D.) ONLY FOR GR, MO, MR SERIES BEARINGS | | RN | . | CYLINDRICAL ROLLER BEARING, TWO LIP INNER 'RING, CYLINDRICAL OUTER RING, ROLLER AND CAGE, SEPARABLE OUTER RING | | RP | . | RETAINER, TWO-PIECE, SINGLE-ROW, PRESS FORMED | | RS | . | 1. MULTIROL, NEEDLE BEARING, SELF-CONTAINED, SINGLE-ROW, OUTER RACE AND NEEDLE ASSEMBLY, (END PLATE TYPE) AND INNER RACE 2. CAM FOLLOWER, AIRCRAFT TYPE I | | RT | . | CAM FOLLOWER, AIRCRAFT TYPE | | RU | . | CYLINDRICAL ROLLER BEARING, TWO LIP OUTER RING, CYLINDRICAL INNER RING, ROLLER AND CAGE, SEPARABLE INNER RING | | S | . | 1. SPHERE-ROL, TAPERED ADAPTER SLEEVE 2. PILLOW BLOCK SERIES, INDICATES CAST STEEL HOUSING (LETTER MUST BE USED WITH BASIC PILLOW BLOCK PREFIX) | | SAP | . | PILLOW BLOCK SERIES, SPLIT HOUSING WITH SPHERE-ROL BEARING (HOUSING CAST IRON, SEE "S" PREFIX FOR CAST STEEL) | | SB | . | SPHERE-ROL, SINGLE-ROW SPHERICAL ROLLER BEARING | | SC | . | BALL BEARING FOR PILLOW BLOCK (MFG. FOR DODGE) | | SDAF | . | PILLOW BLOCK SERIES, HEAVY DUTY SPLIT HOUSING WITH SPHERE-ROL BEARING -(HOUSING CAST IRON - SEE "S" PREFIX FOR CAST STEEL) | | SE | . | SPECIAL "MO" AND RELATED "MI" BEARINGS (INCLUDES ALL SOLID LIP BEARINGS) | | SEE | . | SPHERE-ROL, WITH ECCENTIRC LOCKING COLLAR FOR PILLOW BLOCK MOUNTING | | SFBA | . | SPHERE-ROL, ADAPTER MOUNTED IN FLANGE PILLOW BLOCK MOUNTING | | SFEE | . | | | SK | . | SPECIAL, ALL OTHER BEARINGS OR PARTS OF SPECIAL DESIGN | | SMO | . | MULTIROL, WITH SPHERICAL O.D. | | SNW | . | SPHERE-ROL, COMPLETE TAPER ADAPTER UNIT (SLEEVE, NUT, LOCKING WASHER) | | SPBA | . | SPHERE-ROL, ADAPTER MOUNTED, IN BASE MOUNTED PILLOW BLOCK | | SPBE | . | SPHERE-ROL, SERIES BEARING WITH ECCENTRIC LOCKING COLLAR, IN BASE MOUNTED PILLOW BLOCK | | SR | . | SPECIAL RS, RD, OS, OD, IR, IRD BEARINGS | | STR | . | STEEL RETAINER AND ROLLER ASSEMBLY ONLY | | TR | . | DRAWN CUP ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE , OPEN ENDS , REGULAR ROLLER SERIES- | | TRH | . | DRAWN CUP ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, OPEN ENDS, LARGE ROLLER SERIES | | TRL | . | DRAWN CUP ROLLER BEARING, ONE-PIECE RETAINER, SINGLE-ROW OF ROLLERS, NO INNER RACE, OPEN ENDS, EXTRA LARGE ROLLER | | W | . | SPHERE-ROL, LOCK-WASHER | | YR | . | SPECIAL CYR BEARINGS |
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