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Technical Data Sheet
PartsTable / COMPONENT / 55128
55128 ✓ Verified by PartsTable
Mobiparts · 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 TRANSFORMER,AUDIO FREQUENCY is a Mobiparts industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, style_designator: BALL, rolling_element_diameter: 0.1870 INCHES NOMINAL IN, material_document_and_classification: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-051-1333, 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
55128
NSN: 3110-00-051-1333
FSC: 3110
CAGE: 53655 — AVOX SYSTEMS INC DBA AVOX SYSTEMS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
style_designatorBALL
rolling_element_diameter0.1870 INCHES NOMINAL IN
material_document_and_classificationAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-051-1333
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 55128 · Mobiparts ⚠ 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
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
ROLLING ELEMENT DIAMETER: 0.1870 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: BALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
ROLLING ELEMENT DIAMETER0.1870 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORBALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
45334Interchangeable
interchangeable cross-reference
interchangeable
827Interchangeable
interchangeable cross-reference
interchangeable
724BK03MInterchangeable
interchangeable cross-reference
interchangeable
MILI6447TYPEM1AInterchangeable
interchangeable cross-reference
interchangeable
T50AInterchangeable
interchangeable cross-reference
interchangeable
332-14-07-039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55128?
55128 is a TRANSFORMER,AUDIO FREQUENCY manufactured by Mobiparts.
What parts can replace 55128?
There are 16 known substitutes for 55128: 45334, 827, 724BK03M and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 55128?
55128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-051-1333. 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