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Technical Data Sheet
PartsTable / COMPONENT / RA51276
RA51276 ✓ 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 RECTIFIER,SEMICONDUCTOR DEVICE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E9310 OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, overall_width: 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN, surface_finish: GROUND, style_designator: SOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-046-2089, 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
RA51276
NSN: 3110-01-046-2089
FSC: 3110
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL COMP E9310 OVERALL
bore_shapeSTRAIGHT
bore_diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
overall_width1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
surface_finishGROUND
style_designatorSOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
overall_outside_diameter0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
NSN3110-01-046-2089
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: RA51276 · 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
•
STYLE DESIGNATOR: SOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
•
MATERIAL: STEEL COMP E9310 OVERALL
•
OVERALL OUTSIDE DIAMETER: 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
•
BORE DIAMETER: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
MATERIALSTEEL COMP E9310 OVERALL
OVERALL WIDTH1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
BORE DIAMETER0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
B129Interchangeable
interchangeable cross-reference
interchangeable
BB129Interchangeable
interchangeable cross-reference
interchangeable
B129D1043Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-116Interchangeable
interchangeable cross-reference
interchangeable
10550Interchangeable
interchangeable cross-reference
interchangeable
214-010-479-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RA51276?
RA51276 is a RECTIFIER,SEMICONDUCTOR DEVICE.
What parts can replace RA51276?
There are 7 known substitutes for RA51276: B129, BB129, B129D1043 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RA51276?
RA51276 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-046-2089. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026