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PartsTable / COMPONENT / A-A-55598
A-A-55598 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL ROLLER, bore_shape: STRAIGHT, bore_diameter: 75.0 MILLIMETERS NOMINAL MM, overall_width: 37.0 MILLIMETERS NOMINAL MM, surface_finish: GROUND, locating_feature: NONLOCATING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-006-2390, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A-A-55598
NSN: 3110-00-006-2390
FSC: 3110
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL ROLLER
bore_shapeSTRAIGHT
bore_diameter75.0 MILLIMETERS NOMINAL MM
overall_width37.0 MILLIMETERS NOMINAL MM
surface_finishGROUND
locating_featureNONLOCATING
special_featuresOIL HOLES AND GROOVE IN OUTER RING
style_designatorSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
overall_outside_diameter160.0 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data6 CLASS AND 264 TYPE AND 00 GRADE
standard_tolerance_designationRBEC NO.1
NSN3110-00-006-2390
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A-A-55598 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LOCATING FEATURE: ONE DIRECTION
•
STYLE DESIGNATOR: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE SHAPE: STRAIGHT
•
OVERALL OUTSIDE DIAMETER: 72.00 MILLIMETERS NOMINAL MM
•
BORE DIAMETER: 30.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
LOCATING FEATUREONE DIRECTION
STYLE DESIGNATORSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
OVERALL OUTSIDE DIAMETER72.00 MILLIMETERS NOMINAL MM
BORE DIAMETER30.00 MILLIMETERS NOMINAL MM
OVERALL WIDTH19.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
690706Interchangeable
interchangeable cross-reference
interchangeable
BU1307LInterchangeable
interchangeable cross-reference
interchangeable
NF307Interchangeable
interchangeable cross-reference
interchangeable
413-211-5Interchangeable
interchangeable cross-reference
interchangeable
MU1211DLInterchangeable
interchangeable cross-reference
interchangeable
289966-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-A-55598?
A-A-55598 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace A-A-55598?
There are 19 known substitutes for A-A-55598: 690706, BU1307L, NF307 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-A-55598?
A-A-55598 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-006-2390. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026