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Technical Data Sheet
PartsTable / COMPONENT / QB20145
QB20145 ✓ 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,MICA DIELECTRIC. Key specifications include material: STEEL COMP E50100 OR STEEL COMP E52100 OVERALL, overall_length: 0.8650 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN, style_designator: CYLINDRICAL ROLLER, FLAT ENDS, rolling_element_diameter: 0.3095 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM IN, material_document_and_classification: 66,AISI/SAE E50100 OR E52100 FED 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 3110-00-355-7821, 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
QB20145
NSN: 3110-00-355-7821
FSC: 3110
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL COMP E50100 OR STEEL COMP E52100 OVERALL
overall_length0.8650 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
style_designatorCYLINDRICAL ROLLER, FLAT ENDS
rolling_element_diameter0.3095 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM IN
material_document_and_classification66,AISI/SAE E50100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-355-7821
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: QB20145 · 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: 0.3095 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CYLINDRICAL ROLLER, FLAT ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66,AISI/SAE E50100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP E50100 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 DIAMETER0.3095 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM IN
OVERALL LENGTH0.8650 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
STYLE DESIGNATORCYLINDRICAL ROLLER, FLAT ENDS
MATERIAL DOCUMENT AND CLASSIFICATION66,AISI/SAE E50100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP E50100 OR STEEL COMP E52100 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
157-6DInterchangeable
interchangeable cross-reference
interchangeable
157-6Interchangeable
interchangeable cross-reference
interchangeable
MILC5502Interchangeable
interchangeable cross-reference
interchangeable
8392324Interchangeable
interchangeable cross-reference
interchangeable
22H5T22EJInterchangeable
interchangeable cross-reference
interchangeable
5330PL1277011Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is QB20145?
QB20145 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace QB20145?
There are 12 known substitutes for QB20145: 157-6D, 157-6, MILC5502 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for QB20145?
QB20145 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-355-7821. 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