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Technical Data Sheet
PartsTable / COMPONENT / B305-18
B305-18 ✓ 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,ROLLER,JOURNAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 1.2500 INCHES NOMINAL IN, overall_width: 1.1250 INCHES NOMINAL IN, special_features: OIL HOLE IN OUTER RING, style_designator: SOLID OUTER RACE, NO INNER RACE, overall_outside_diameter: 62.0 MILLIMETERS NOMINAL MM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2139, 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
B305-18
NSN: 3110-00-198-2139
FSC: 3110
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.2500 INCHES NOMINAL IN
overall_width1.1250 INCHES NOMINAL IN
special_featuresOIL HOLE IN OUTER RING
style_designatorSOLID OUTER RACE, NO INNER RACE
overall_outside_diameter62.0 MILLIMETERS NOMINAL MM
standard_tolerance_designationAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
NSN3110-00-198-2139
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B305-18 · 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: 1.2500 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SOLID OUTER RACE, NO INNER RACE
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCES FOR JOURNAL BEARINGS
•
OVERALL OUTSIDE DIAMETER: 62.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER1.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSOLID OUTER RACE, NO INNER RACE
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
SPECIAL FEATURESOIL HOLE IN OUTER RING
OVERALL WIDTH1.1250 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER62.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
EWB26-5-26Interchangeable
interchangeable cross-reference
interchangeable
BM5526-5-26Interchangeable
interchangeable cross-reference
interchangeable
C305Interchangeable
interchangeable cross-reference
interchangeable
LF-591Interchangeable
interchangeable cross-reference
interchangeable
T-192-PInterchangeable
interchangeable cross-reference
interchangeable
K729Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B305-18?
B305-18 is a BEARING,ROLLER,JOURNAL.
What parts can replace B305-18?
There are 15 known substitutes for B305-18: EWB26-5-26, BM5526-5-26, C305 and 12 more. Substitute compatibility should be verified for your specific system.
Is B305-18 still available?
B305-18 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026