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Technical Data Sheet
PartsTable / COMPONENT / B25998
B25998 ✓ 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 CORROSION RESISTING OVERALL, bore_shape: STRAIGHT, flange_width: 0.0310 INCHES NOMINAL IN, bore_diameter: 0.1250 INCHES NOMINAL IN, overall_width: 0.1406 INCHES NOMINAL IN, load_direction: RADIAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-912-5835, 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
B25998
NSN: 3110-00-912-5835
FSC: 3110
CAGE: 98284 — ROSEMOUNT AEROSPACE, INC. DBA GOODRICH SENSOR SYSTEMS, HUMPHREY OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
bore_shapeSTRAIGHT
flange_width0.0310 INCHES NOMINAL IN
bore_diameter0.1250 INCHES NOMINAL IN
overall_width0.1406 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
special_features0-10 BAR
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
lubrication_materialOIL
NSN3110-00-912-5835
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B25998 · 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: NON-LOADING GROOVE, NON-SEPARABLE
•
FLANGE OUTSIDE DIAMETER: 0.3590 INCHES NOMINAL IN
•
LUBRICATION MATERIAL: OIL
•
FLANGE WIDTH: 0.0310 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.3
•
OUTER RING OUTSIDE DIAMETER: 0.3125 INCHES NOMINAL IN
•
INTERNAL CLEARANCE: 0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
FLANGE OUTSIDE DIAMETER0.3590 INCHES NOMINAL IN
LUBRICATION MATERIALOIL
FLANGE WIDTH0.0310 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONABEC NO.3
OUTER RING OUTSIDE DIAMETER0.3125 INCHES NOMINAL IN
INTERNAL CLEARANCE0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
RETAINER FABRICATION METHODPRESSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
SFR2-5SSInterchangeable
interchangeable cross-reference
interchangeable
3110-99-199Interchangeable
interchangeable cross-reference
interchangeable
SC500-104Interchangeable
interchangeable cross-reference
interchangeable
B25998Interchangeable
interchangeable cross-reference
interchangeable
200-1-002-7Interchangeable
Same NIIN cross-reference
interchangeable
43A215Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B25998?
B25998 is a BEARING,BALL,ANNULAR.
What parts can replace B25998?
There are 8 known substitutes for B25998: SFR2-5SS, 3110-99-199, SC500-104 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B25998?
B25998 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-912-5835. 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