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Technical Data Sheet
PartsTable / COMPONENT / MS51961-35
MS51961-35 ✓ Verified by PartsTable
— · 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,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include bore_diameter: 2.7500 INCHES NOMINAL IN, overall_width: 1.5000 INCHES NOMINAL 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 Federal Logistics Information System (FLIS) under NSN 3110-00-554-6848, 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
MS51961-35
NSN: 3110-00-554-6848
FSC: 3110
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP E4340H OR STEEL COMP 4720H OR STEEL COMP 8620 OR STEEL COMP 8720 OUTER RING
bore_diameter2.7500 INCHES NOMINAL IN
overall_width1.5000 INCHES NOMINAL IN
alignment_typeRIGID
surface_finishGROUND
special_featuresOIL HOLE AND GROOVE IN OUTER RING ALSO MFR STD RETAINER
style_designatorNON-SEPARABLE, WITH ROLLER RETAINER, HARDENED AND GROUND
overall_outside_diameter3.5000 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES ROLLER
NSN3110-00-554-6848
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS51961-35 · 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
•
MATERIAL: STEEL OR COPPER ALLOY RETAINER
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES ROLLER
•
OVERALL OUTSIDE DIAMETER: 3.5000 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OR COPPER ALLOY RETAINER
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP E4340H OR STEEL COMP 4720H OR STEEL COMP 8620 OR STEEL COMP 8720 OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES ROLLER
MATERIALSTEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 ROLLER
OVERALL OUTSIDE DIAMETER3.5000 INCHES NOMINAL IN
OVERALL WIDTH1.5000 INCHES NOMINAL IN
SURFACE FINISHGROUND
SPECIAL FEATURESOIL HOLE AND GROOVE IN OUTER RING ALSO MFR STD RETAINER
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
ALIGNMENT TYPERIGID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
NCS4-4-24Interchangeable
interchangeable cross-reference
interchangeable
575R275H40Interchangeable
interchangeable cross-reference
interchangeable
90032Interchangeable
interchangeable cross-reference
interchangeable
Y9000Interchangeable
interchangeable cross-reference
interchangeable
5180-00-701-8046Interchangeable
interchangeable cross-reference
interchangeable
230394Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51961-35?
MS51961-35 is a BEARING,ROLLER,NEEDLE.
What parts can replace MS51961-35?
There are 22 known substitutes for MS51961-35: NCS4-4-24, 575R275H40, 90032 and 19 more. Substitute compatibility should be verified for your specific system.
Is MS51961-35 still available?
MS51961-35 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026