A3990/61757 — BEARING,BALL,ANNULAR

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

A3990/61757: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 260 RETAINER, bore_shape: STRAIGHT, bore_diameter: 4.4998 INCHES NOMINAL IN, overall_width: 0.2500 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-235-2874, 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

A3990/61757

NSN: 3110-01-235-2874
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: U6682 — LEONARDO UK LTD (GBR)

SPECIFICATIONS

material	COPPER ALLOY 260 RETAINER
bore_shape	STRAIGHT
bore_diameter	4.4998 INCHES NOMINAL IN
overall_width	0.2500 INCHES NOMINAL IN
load_direction	RADIAL
surface_finish	GROUND
special_features	ELECTRO-DEPOSITION PLATED CORROSION RESISTANCE
style_designator	4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE
functional_description	COMBINATION OF RADIAL,TRUST AND MOVEMENT LOADING
overall_outside_diameter	5.0003 INCHES NOMINAL IN
internal_fit-up_designation	STANDARD
retainer_fabrication_method	PRESSED
NSN	3110-01-235-2874

COMPONENT DIAGRAM

KEY FEATURES

•

RETAINER FABRICATION METHOD: PRESSED

•

INTERNAL FIT-UP DESIGNATION: STANDARD

•

SURFACE FINISH: GROUND

•

STYLE DESIGNATOR: 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE BALL

TECHNICAL CHARACTERISTICS

RETAINER FABRICATION METHOD	PRESSED
INTERNAL FIT-UP DESIGNATION	STANDARD
SURFACE FINISH	GROUND
STYLE DESIGNATOR	4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATION	SAE CA260 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE RETAINER
OVERALL WIDTH	0.2500 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER	5.0003 INCHES NOMINAL IN

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 2

ARS997Reference document

Same NSN cross-reference

Reference document — Secondary reference

NA045XPOSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is A3990/61757?

A3990/61757 is a BEARING,BALL,ANNULAR.

What parts can replace A3990/61757?

There are 2 known substitutes for A3990/61757: ARS997, NA045XPO. Substitute compatibility should be verified for your specific system.

What is the NSN for A3990/61757?

A3990/61757 is cataloged in the U.S. Government catalog under NSN 3110-01-235-2874. This indicates validated use in U.S. government and defense supply chains.

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