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321981R91 — Technical Data Sheet

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— · 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 ROLLER,BEARING is a the manufacturer industrial component. Key specifications include bore_diameter: 1.3130 INCHES MINIMUM AND 1.3136 INCHES MAXIMUM IN, overall_length: 1.0000 INCHES NOMINAL IN, special_features: ROLLER TYPE: SOLID, end_item_identification: 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR), overall_outside_diameter: 1.3136 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3110-00-923-1246, 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
321981R91
NSN: 3110-00-923-1246
FSC: 3110
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
bore_diameter1.3130 INCHES MINIMUM AND 1.3136 INCHES MAXIMUM IN
overall_length1.0000 INCHES NOMINAL IN
special_featuresROLLER TYPE: SOLID
end_item_identification2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
overall_outside_diameter1.3136 INCHES NOMINAL IN
NSN3110-00-923-1246
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 321981R91 · 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: 1.3136 INCHES NOMINAL IN
•
BORE DIAMETER: 1.3130 INCHES MINIMUM AND 1.3136 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL OUTSIDE DIAMETER1.3136 INCHES NOMINAL IN
BORE DIAMETER1.3130 INCHES MINIMUM AND 1.3136 INCHES MAXIMUM IN
OVERALL LENGTH1.0000 INCHES NOMINAL IN
END ITEM IDENTIFICATION2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
SPECIAL FEATURESROLLER TYPE: SOLID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
A19070-21InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A21038-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
GSE-729-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C123-67InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
123-67InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
D9484-59-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 321981R91?
321981R91 is a ROLLER,BEARING.
What parts can replace 321981R91?
There are 26 known substitutes for 321981R91: A19070-21, A21038-1, GSE-729-1 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 321981R91?
321981R91 is cataloged in the Federal Logistics Information System under NSN 3110-00-923-1246. 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: September 2026