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28970-6 — BALL,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

28970-6: BALL,BEARING.

The BALL,BEARING is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, special_features: BALL SPHERICAL WITHIN 0.0002 IN.,SURFACE FINISH 32 MICROINCHES AA AND SURFACE TREATMENT,ANODIZED PER AMS 2470 IN, style_designator: BALL, rolling_element_diameter: 0.2177 INCHES MINIMUM AND 0.2197 INCHES MAXIMUM IN, material_document_and_classification: AMS4118 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-989-7002, 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
28970-6
NSN: 3110-00-989-7002
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 11599 — TRIUMPH ENGINE CONTROL SYSTEMS LLC (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
special_featuresBALL SPHERICAL WITHIN 0.0002 IN.,SURFACE FINISH 32 MICROINCHES AA AND SURFACE TREATMENT,ANODIZED PER AMS 2470 IN
style_designatorBALL
rolling_element_diameter0.2177 INCHES MINIMUM AND 0.2197 INCHES MAXIMUM IN
material_document_and_classificationAMS4118 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-989-7002
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 28970-6 · 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
•
ROLLING ELEMENT DIAMETER: 0.2177 INCHES MINIMUM AND 0.2197 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4118 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: ALUMINUM OVERALL
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.2177 INCHES MINIMUM AND 0.2197 INCHES MAXIMUM IN
STYLE DESIGNATORBALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4118 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPECIAL FEATURESBALL SPHERICAL WITHIN 0.0002 IN.,SURFACE FINISH 32 MICROINCHES AA AND SURFACE TREATMENT,ANODIZED PER AMS 2470 IN
MATERIALALUMINUM OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 28970-6?
28970-6 is a BALL,BEARING.
What is the NSN for 28970-6?
28970-6 is cataloged in the U.S. Government catalog under NSN 3110-00-989-7002. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.