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Technical Data Sheet
PartsTable / COMPONENT / B5157
B5157 ✓ 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

SUPPORT,STRUCTURAL COMPONENT,AIR. Key specifications include phase: THREE, length: 3.875 INCHES NOMINAL IN, material: ALUMINUM OVERALL, drive_type: DIRECT, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4276, 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
B5157
NSN: 3110-00-120-4276
FSC: 3110
CAGE: 13125 — CLEVELAND TRENCHER CO INC (USA)
SPECIFICATIONS
phaseTHREE
length3.875 INCHES NOMINAL IN
materialALUMINUM OVERALL
drive_typeDIRECT
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
air_flow_rate300.0 CUBIC FEET PER MINUTE MAXIMUM
overall_width0.1835 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN
flow_directionINWARD
inclosure_typeFULLY INCLOSED
prime_mover_typeELECTRIC MOTOR
special_featuresOUTSIDE DIAMETER IS 1.0000 INCHES NOMINAL. IN
NSN3110-00-120-4276
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B5157 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCES FOR JOURNAL BEARINGS
•
OVERALL OUTSIDE DIAMETER: 1.5000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCES FOR JOURNAL BEARINGS
SPECIAL FEATURESOUTSIDE DIAMETER IS 1.0000 INCHES NOMINAL. IN
OVERALL OUTSIDE DIAMETER1.5000 INCHES NOMINAL IN
OVERALL WIDTH2.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
160432Interchangeable
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1334857Interchangeable
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143696Interchangeable
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3862Interchangeable
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NOBLE3862Interchangeable
interchangeable cross-reference
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1798039-29Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B5157?
B5157 is a SUPPORT,STRUCTURAL COMPONENT,AIR.
What parts can replace B5157?
There are 30 known substitutes for B5157: 160432, 1334857, 143696 and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B5157?
B5157 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4276. 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