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Technical Data Sheet
PartsTable / COMPONENT / K139
K139 ✓ 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

CAPACITOR,FIXED,PAPER DIELECTRIC. Key specifications include material: COPPER ALLOY OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STANDARD, helix_angle: 45.0000 DEGREES. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-6147, 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
K139
NSN: 3110-00-100-6147
FSC: 3110
CAGE: 87513 — STANDARD BUSINESS MACHINES CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
teeth_typeSINGLE HELIX
tooth_formSTANDARD
helix_angle45.0000 DEGREES
pitch_diameter1.2430 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity30
tooth_directionRIGHT
special_featuresMTG HOLES 90 DEGS APART
style_designatorPROTRUDING HUB
NSN3110-00-100-6147
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K139 · 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
•
ROLLING ELEMENT DIAMETER: 0.1250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
ROLLING ELEMENT DIAMETER0.1250 INCHES NOMINAL IN
SPECIAL FEATURESAFBMA STANDARD TOLERANCE FOR BALLS,GRADE 24
STYLE DESIGNATORBALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
T1913Interchangeable
interchangeable cross-reference
interchangeable
42-6880-100-150Interchangeable
interchangeable cross-reference
interchangeable
K2412Interchangeable
interchangeable cross-reference
interchangeable
100-4Interchangeable
interchangeable cross-reference
interchangeable
MC6VACInterchangeable
interchangeable cross-reference
interchangeable
MCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K139?
K139 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace K139?
There are 34 known substitutes for K139: T1913, 42-6880-100-150, K2412 and 31 more. Substitute compatibility should be verified for your specific system.
Is K139 still available?
K139 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