PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 177030-100
177030-100 ✓ 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: 25.00 MILLIMETERS NOMINAL MM, overall_width: 0.8750 INCHES NOMINAL IN, load_direction: ANGULAR, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-555-5381, 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
177030-100
NSN: 3110-00-555-5381
FSC: 3110
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter25.00 MILLIMETERS NOMINAL MM
overall_width0.8750 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
shield_quantity1
style_designatorLOADING GROOVE, NON-SEPARABLE
overall_outside_diameter52.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN3110-00-555-5381
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 177030-100 · 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: 25.00 MILLIMETERS NOMINAL MM
•
SHIELD QUANTITY: 1
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
MATERIAL: STEEL OVERALL
•
OVERALL OUTSIDE DIAMETER: 52.00 MILLIMETERS NOMINAL MM
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: INWARD CONVERGENT
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER25.00 MILLIMETERS NOMINAL MM
SHIELD QUANTITY1
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OVERALL
OVERALL OUTSIDE DIAMETER52.00 MILLIMETERS NOMINAL MM
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
954418Interchangeable
interchangeable cross-reference
interchangeable
0042991Interchangeable
interchangeable cross-reference
interchangeable
5205WDInterchangeable
Same NIIN cross-reference
interchangeable
FFB171Interchangeable
Same NIIN cross-reference
interchangeable
273829-130Interchangeable
Same NIIN cross-reference
interchangeable
5205NRM1TX9Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 177030-100?
177030-100 is a BEARING,BALL,ANNULAR.
What parts can replace 177030-100?
There are 9 known substitutes for 177030-100: 954418, 0042991, 5205WD and 6 more. Substitute compatibility should be verified for your specific system.
Is 177030-100 still available?
177030-100 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