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PartsTable / COMPONENT / R4SSX77K912C
R4SSX77K912C ✓ 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 COMP 440C OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.2500 INCHES NOMINAL IN, overall_width: 0.1960 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-340-5176, 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
R4SSX77K912C
NSN: 3110-00-340-5176
FSC: 3110
CAGE: 70854 — SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OVERALL
bore_shapeSTRAIGHT
bore_diameter0.2500 INCHES NOMINAL IN
overall_width0.1960 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
special_featuresFILL BEARING 65 PORM 10 MG WITH SPECIFIED GREASE
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0009 INCHES MINIMUM RADIAL AND 0.0012 INCHES MAXIMUM RADIAL IN
lubrication_materialGREASE
overall_outside_diameter0.6250 INCHES NOMINAL IN
NSN3110-00-340-5176
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R4SSX77K912C · 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
•
OVERALL OUTSIDE DIAMETER: 0.6250 INCHES NOMINAL IN
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MEDIUM DC33,FSCM 71984 MFR REF SINGLE MATERIAL RESPONSE
•
SHIELD QUANTITY: 2
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
•
SURFACE FINISH: GROUND
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER0.6250 INCHES NOMINAL IN
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMEDIUM DC33,FSCM 71984 MFR REF SINGLE MATERIAL RESPONSE
SHIELD QUANTITY2
SPECIAL FEATURESFILL BEARING 65 PORM 10 MG WITH SPECIFIED GREASE
STANDARD TOLERANCE DESIGNATIONABEC NO.5
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
LUBRICATION MATERIALGREASE
RETAINER FABRICATION METHODPRESSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
166261Interchangeable
interchangeable cross-reference
interchangeable
G9623P56Interchangeable
interchangeable cross-reference
interchangeable
70343-3Interchangeable
interchangeable cross-reference
interchangeable
543405Interchangeable
interchangeable cross-reference
interchangeable
SR4.2Z.KO1.T5S1.PS59RInterchangeable
Same NIIN cross-reference
interchangeable
SR45PPDK9-12Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R4SSX77K912C?
R4SSX77K912C is a BEARING,BALL,ANNULAR.
What parts can replace R4SSX77K912C?
There are 8 known substitutes for R4SSX77K912C: 166261, G9623P56, 70343-3 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R4SSX77K912C?
R4SSX77K912C is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-340-5176. 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