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PartsTable / COMPONENT / M445642
M445642 ✓ 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,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL BALL, bore_shape: STRAIGHT, bore_diameter: 17.4985 INCHES MINIMUM AND 17.5000 INCHES MAXIMUM IN, overall_width: 1.3700 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-159-9099, 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
M445642
NSN: 3110-00-159-9099
FSC: 3110
CAGE: 21921 — RCA CORP DISTRIBUTOR AND SPECIAL PRODUCTS DIV
SPECIFICATIONS
materialSTEEL BALL
bore_shapeSTRAIGHT
bore_diameter17.4985 INCHES MINIMUM AND 17.5000 INCHES MAXIMUM IN
overall_width1.3700 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
special_featuresINTERNAL CLEARANCE UNDER A 500 LB LOAD LBS
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0010 INCHES NOMINAL RADIAL IN
overall_outside_diameter20.4985 INCHES MINIMUM AND 20.5000 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
NSN3110-00-159-9099
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M445642 · 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
•
OVERALL OUTSIDE DIAMETER: 20.4985 INCHES MINIMUM AND 20.5000 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
RETAINER FABRICATION METHOD: MACHINED
•
MATERIAL: STEEL OUTER RING
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER20.4985 INCHES MINIMUM AND 20.5000 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
SPECIAL FEATURESINTERNAL CLEARANCE UNDER A 500 LB LOAD LBS
RETAINER FABRICATION METHODMACHINED
MATERIALSTEEL OUTER RING
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL INNER RING
MATERIALALUMINUM ALLOY RETAINER
MATERIALSTEEL BALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
2851-8Interchangeable
interchangeable cross-reference
interchangeable
HMS271-30AWG-ORNInterchangeable
interchangeable cross-reference
interchangeable
M16878/4BBB3Interchangeable
interchangeable cross-reference
interchangeable
A104107Interchangeable
interchangeable cross-reference
interchangeable
235-001Interchangeable
interchangeable cross-reference
interchangeable
23500-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M445642?
M445642 is a BEARING,BALL,ANNULAR.
What parts can replace M445642?
There are 15 known substitutes for M445642: 2851-8, HMS271-30AWG-ORN, M16878/4BBB3 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M445642?
M445642 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-159-9099. 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