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Technical Data Sheet
PartsTable / COMPONENT / 51963A
51963A ✓ 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,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 55.00 MILLIMETERS NOMINAL MM, overall_width: 1.3125 INCHES NOMINAL IN, load_direction: ANGULAR, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-554-3102, 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
51963A
NSN: 3110-00-554-3102
FSC: 3110
CAGE: 00742 — AIR PRODUCTS & CHEMICALS, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter55.00 MILLIMETERS NOMINAL MM
overall_width1.3125 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
overall_outside_diameter100.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
internal_fit-up_contact_angular_directionOUTWARD CONVERGENT
NSN3110-00-554-3102
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 51963A · 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 OVERALL
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
BORE DIAMETER: 65.00 MILLIMETERS NOMINAL MM
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
OVERALL OUTSIDE DIAMETER: 120.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
BORE DIAMETER65.00 MILLIMETERS NOMINAL MM
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
INTERNAL FIT-UP DESIGNATIONSTANDARD
OVERALL WIDTH23.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER120.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
RETAINER FABRICATION METHODPRESSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MIL-S-001222Interchangeable
interchangeable cross-reference
interchangeable
5305PL1450724Interchangeable
interchangeable cross-reference
interchangeable
2DD125Interchangeable
interchangeable cross-reference
interchangeable
907406Interchangeable
interchangeable cross-reference
interchangeable
B7406Interchangeable
interchangeable cross-reference
interchangeable
5211XR1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51963A?
51963A is a BEARING,BALL,ANNULAR.
What parts can replace 51963A?
There are 16 known substitutes for 51963A: MIL-S-001222, 5305PL1450724, 2DD125 and 13 more. Substitute compatibility should be verified for your specific system.
Is 51963A still available?
51963A 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