523990-1 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

523990-1: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY RETAINER, bore_shape: STRAIGHT, bore_diameter: 0.7874 INCHES NOMINAL IN, overall_width: 0.4724 INCHES NOMINAL IN, surface_finish: GROUND, locating_feature: ONE DIRECTION. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-720-2499, 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

523990-1

NSN: 3110-00-720-2499
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 38443 — SKF USA INC. (USA)

SPECIFICATIONS

material	COPPER ALLOY RETAINER
bore_shape	STRAIGHT
bore_diameter	0.7874 INCHES NOMINAL IN
overall_width	0.4724 INCHES NOMINAL IN
surface_finish	GROUND
locating_feature	ONE DIRECTION
style_designator	SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
internal_clearance	0.0005 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN
overall_outside_diameter	1.6535 INCHES NOMINAL IN
retainer_fabrication_method	MACHINED
standard_tolerance_designation	RBEC NO.5
NSN	3110-00-720-2499

COMPONENT DIAGRAM

KEY FEATURES

•

RETAINER FABRICATION METHOD: MACHINED

•

INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN

•

LOCATING FEATURE: ONE DIRECTION

•

SURFACE FINISH: GROUND

•

STYLE DESIGNATOR: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE

•

OVERALL OUTSIDE DIAMETER: 1.6535 INCHES NOMINAL IN

•

BORE SHAPE: STRAIGHT

TECHNICAL CHARACTERISTICS

RETAINER FABRICATION METHOD	MACHINED
INTERNAL CLEARANCE	0.0005 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN
LOCATING FEATURE	ONE DIRECTION
SURFACE FINISH	GROUND
STYLE DESIGNATOR	SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
OVERALL WIDTH	0.4724 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER	1.6535 INCHES NOMINAL IN
BORE SHAPE	STRAIGHT
STANDARD TOLERANCE DESIGNATION	RBEC NO.5
BORE DIAMETER	0.7874 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 1

R104KD201Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 523990-1?

523990-1 is a BEARING,ROLLER,CYLINDRICAL.

What parts can replace 523990-1?

There is 1 known substitute for 523990-1: R104KD201. Substitute compatibility should be verified for your specific system.

What is the NSN for 523990-1?

523990-1 is cataloged in the U.S. Government catalog under NSN 3110-00-720-2499. This indicates validated use in U.S. government and defense supply chains.

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523990-1 — BEARING,ROLLER,CYLINDRICAL

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