MS51961-45 — BEARING,ROLLER,NEEDLE

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

MS51961-45: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include bore_diameter: 4.0012 INCHES MINIMUM AND 4.0024 INCHES MAXIMUM IN, overall_width: 1.9950 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN, alignment_type: RIGID, surface_finish: GROUND, special_features: OIL HOLE AND GROOVE IN OUTER RING ALSO MFR STD RETAINER, style_designator: NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-903-1495, 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

MS51961-45

NSN: 3110-00-903-1495
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

material	STEEL COMP E4340H OR STEEL COMP 4720 OR STEEL COMP 8620 OR STEEL COMP 8720 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP E50100 OUTER RING
bore_diameter	4.0012 INCHES MINIMUM AND 4.0024 INCHES MAXIMUM IN
overall_width	1.9950 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
alignment_type	RIGID
surface_finish	GROUND
special_features	OIL HOLE AND GROOVE IN OUTER RING ALSO MFR STD RETAINER
style_designator	NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
overall_outside_diameter	4.9990 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN
retainer_fabrication_method	PRESSED
standard_tolerance_designation	AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
NSN	3110-00-903-1495

COMPONENT DIAGRAM

KEY FEATURES

•

RETAINER FABRICATION METHOD: PRESSED

•

SURFACE FINISH: GROUND

•

STYLE DESIGNATOR: NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND

•

OVERALL OUTSIDE DIAMETER: 4.9990 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN

•

ALIGNMENT TYPE: RIGID

•

STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS

TECHNICAL CHARACTERISTICS

RETAINER FABRICATION METHOD	PRESSED
SURFACE FINISH	GROUND
STYLE DESIGNATOR	NON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
OVERALL WIDTH	1.9950 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER	4.9990 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM IN
ALIGNMENT TYPE	RIGID
SPECIAL FEATURES	OIL HOLE AND GROOVE IN OUTER RING ALSO MFR STD RETAINER
STANDARD TOLERANCE DESIGNATION	AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
BORE DIAMETER	4.0012 INCHES MINIMUM AND 4.0024 INCHES MAXIMUM IN
MATERIAL	STEEL OR COPPER ALLOY RETAINER

SUBSTITUTES & CROSS-REFERENCES 3

MR64Reference document

Same NSN cross-reference

Reference document — Secondary reference

SJ9688Reference document

Same NSN cross-reference

Reference document — Secondary reference

HJ648032Reference 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 MS51961-45?

MS51961-45 is a BEARING,ROLLER,NEEDLE.

What parts can replace MS51961-45?

There are 3 known substitutes for MS51961-45: MR64, SJ9688, HJ648032. Substitute compatibility should be verified for your specific system.

What is the NSN for MS51961-45?

MS51961-45 is cataloged in the U.S. Government catalog under NSN 3110-00-903-1495. This indicates validated use in U.S. government and defense supply chains.

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