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Technical Data Sheet
PartsTable / COMPONENT / E12
E12 ✓ 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 BATTERY,NONRECHARGEABLE is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include shape: CYLINDRICAL, diameter: 0.204 INCHES NOMINAL IN, material: COPPER ALLOY, fuel_type: ACETYLENE, bore_shape: STRAIGHT, bore_diameter: 12.00 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-6697, 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
E12
NSN: 3110-00-156-6697
FSC: 3110
CAGE: 43991 — FAG BEARINGS CORPORATION (USA)
SPECIFICATIONS
shapeCYLINDRICAL
diameter0.204 INCHES NOMINAL IN
materialCOPPER ALLOY
fuel_typeACETYLENE
bore_shapeSTRAIGHT
bore_diameter12.00 MILLIMETERS NOMINAL MM
overall_width0.500 INCHES NOMINAL IN
terminal_typeFLAT CONTACT BOTTOM
load_directionRADIAL
overall_length5.500 INCHES NOMINAL IN
surface_finishGROUND
size_designator12
NSN3110-00-156-6697
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: E12 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE DIAMETER: 12.00 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OUTER RING
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
•
OVERALL OUTSIDE DIAMETER: 32.00 MILLIMETERS NOMINAL MM
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)
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE DIAMETER12.00 MILLIMETERS NOMINAL MM
OVERALL WIDTH7.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OUTER RING
MATERIALSTEEL INNER RING
STYLE DESIGNATORCOUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
MATERIALSTEEL BALL
OVERALL OUTSIDE DIAMETER32.00 MILLIMETERS NOMINAL MM
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
121AInterchangeable
interchangeable cross-reference
interchangeable
ME295UInterchangeable
interchangeable cross-reference
interchangeable
125BInterchangeable
interchangeable cross-reference
interchangeable
3043Interchangeable
interchangeable cross-reference
interchangeable
9629Interchangeable
interchangeable cross-reference
interchangeable
110-12-60Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E12?
E12 is a BATTERY,NONRECHARGEABLE.
What parts can replace E12?
There are 25 known substitutes for E12: 121A, ME295U, 125B and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E12?
E12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-6697. 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