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Technical Data Sheet
PartsTable / COMPONENT / 40-557-7
40-557-7 ✓ 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 40-557-7 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-556-6381, 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
40-557-7
NSN: 3110-00-556-6381
FSC: 3110
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
Part Number40-557-7
NSN3110-00-556-6381
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 40-557-7 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: -50,FSCM 62983 MFR REF 3RD MATERIAL RESPONSE OUTER RING
•
MATERIAL: STEEL OUTER RING
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION-50,FSCM 62983 MFR REF 3RD MATERIAL RESPONSE OUTER RING
MATERIALSTEEL OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATION-50,FSCM 62983 MFR REF 1ST MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION-50,FSCM 62983 MFR REF 2ND MATERIAL RESPONSE BALL
MATERIALSTEEL INNER RING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4616 ASSN STD 4TH MATERIAL RESPONSE RETAINER
MATERIALCOPPER ALLOY RETAINER
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL BALL
BORE DIAMETER0.5904 INCHES MINIMUM AND 0.5906 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
40-557-7Interchangeable
interchangeable cross-reference
interchangeable
0187Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40-557-7?
40-557-7 is a 40-557-7.
What parts can replace 40-557-7?
There are 2 known substitutes for 40-557-7: 40-557-7, 0187. Substitute compatibility should be verified for your specific system.
What is the NSN for 40-557-7?
40-557-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-556-6381. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026