PartsTable
Technical Data Sheet
77R8XR1C ✓ 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: 0.5000 INCHES NOMINAL IN, overall_width: 0.3125 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-081-1287, 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
77R8XR1C
NSN: 3110-00-081-1287
FSC: 3110
CAGE: 06389 — BEARING AND DRIVE SYSTEMS INC DBA BEARINGS MANUFACTURING CO DIV BEARINGS MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter0.5000 INCHES NOMINAL IN
overall_width0.3125 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
lubrication_materialGREASE
overall_outside_diameter1.1250 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
standard_tolerance_designationABEC NO.1
NSN3110-00-081-1287
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 77R8XR1C · 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
SURFACE FINISH: GROUND
SHIELD QUANTITY: 2
MATERIAL: STEEL OVERALL
INTERNAL FIT-UP DESIGNATION: STANDARD
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
BORE SHAPE: STRAIGHT
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
SHIELD QUANTITY2
MATERIALSTEEL OVERALL
INTERNAL FIT-UP DESIGNATIONSTANDARD
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.3125 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
LUBRICATION MATERIALGREASE
BORE DIAMETER0.5000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
FF-B-2844/05Interchangeable
interchangeable cross-reference
interchangeable
SR33PPDK36-74Interchangeable
interchangeable cross-reference
interchangeable
FFB2844/05AD1XXInterchangeable
interchangeable cross-reference
interchangeable
SSRI-1438ZZRA3P25LY332Interchangeable
interchangeable cross-reference
interchangeable
7041-97Interchangeable
interchangeable cross-reference
interchangeable
S125375P15LDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77R8XR1C?
77R8XR1C is a BEARING,BALL,ANNULAR.
What parts can replace 77R8XR1C?
There are 22 known substitutes for 77R8XR1C: FF-B-2844/05, SR33PPDK36-74, FFB2844/05AD1XX and 19 more. Substitute compatibility should be verified for your specific system.
Is 77R8XR1C still available?
77R8XR1C is currently cancelled.
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