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Technical Data Sheet
PartsTable / COMPONENT / 77R2X1S
77R2X1S ✓ 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: 0.1250 INCHES NOMINAL IN, overall_width: 0.1562 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 3110-00-277-0019, 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
77R2X1S
NSN: 3110-00-277-0019
FSC: 3110
CAGE: 43334 — GENERAL MOTORS CORP DELCO MORAINE NDH DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter0.1250 INCHES NOMINAL IN
overall_width0.1562 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter0.3750 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
NSN3110-00-277-0019
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 77R2X1S · 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
•
BORE DIAMETER: 0.1250 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SHIELD QUANTITY: 2
•
SURFACE FINISH: GROUND
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-15719 MIL SPEC SINGLE MATERIAL RESPONSE
•
LOAD DIRECTION: RADIAL
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.1250 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
SHIELD QUANTITY2
SURFACE FINISHGROUND
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-15719 MIL SPEC SINGLE MATERIAL RESPONSE
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
LUBRICATION MATERIALGREASE
RETAINER FABRICATION METHODPRESSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
77R2X1266AP17Interchangeable
interchangeable cross-reference
interchangeable
102-5532P1Interchangeable
interchangeable cross-reference
interchangeable
33KDD3Interchangeable
interchangeable cross-reference
interchangeable
6157-P-36-13Interchangeable
interchangeable cross-reference
interchangeable
R2NFFInterchangeable
interchangeable cross-reference
interchangeable
03-6014-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77R2X1S?
77R2X1S is a BEARING,BALL,ANNULAR.
What parts can replace 77R2X1S?
There are 8 known substitutes for 77R2X1S: 77R2X1266AP17, 102-5532P1, 33KDD3 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77R2X1S?
77R2X1S is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-277-0019. 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