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R8HJB5 — 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 OUTER RING, bore_shape: STRAIGHT, bore_diameter: 0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, contact_angle: 25.0 DEGREES MINIMUM, overall_width: 0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN, load_direction: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3110-00-168-6224, 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
R8HJB5
NSN: 3110-00-168-6224
FSC: 3110
CAGE: 70854 — SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OUTER RING
bore_shapeSTRAIGHT
bore_diameter0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
contact_angle25.0 DEGREES MINIMUM
overall_width0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
load_directionANGULAR
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RING, NON-SEPARABLE
internal_clearance0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
overall_outside_diameter2.6769 INCHES MINIMUM AND 2.6772 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE BALL
NSN3110-00-168-6224
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R8HJB5 · 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
•
INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
•
LOAD DIRECTION: ANGULAR
•
BORE SHAPE: STRAIGHT
•
CONTACT ANGLE: 25.0 DEGREES MINIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE INNER RING
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
LOAD DIRECTIONANGULAR
BORE SHAPESTRAIGHT
CONTACT ANGLE25.0 DEGREES MINIMUM
LOAD DIRECTIONANGULAR
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE BALL
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
MATERIALSTEEL COMP E52100 BALL
MATERIALCOPPER ALLOY RETAINER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
6785InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
E2541InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SA3274InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
535834-6InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
263501PC12InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7040-12InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R8HJB5?
R8HJB5 is a BEARING,BALL,ANNULAR.
What parts can replace R8HJB5?
There are 7 known substitutes for R8HJB5: 6785, E2541, SA3274 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R8HJB5?
R8HJB5 is cataloged in the Federal Logistics Information System under NSN 3110-00-168-6224. 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: October 2026