PartsTable
Technical Data Sheet
PartsTable / MRO / 21156-1
21156-1 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 CAPACITOR,FIXED,ELECTROLYTIC 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 material: STEEL OVERALL, anode_type: PLAIN FOIL, body_style: W/O MTG FACILITIES, AXIAL TERMINALS, cone_width: 1.1450 INCHES NOMINAL IN, body_length: 0.621 INCHES NOMINAL IN, body_diameter: 0.320 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0238, 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
MRO→ MRO_GENERAL→ 21156-1
NSN: 3110-00-100-0238
FSC: 3110
CAGE: 25681 — ITT GOULDS PUMPS, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, AXIAL TERMINALS
cone_width1.1450 INCHES NOMINAL IN
body_length0.621 INCHES NOMINAL IN
body_diameter0.320 INCHES NOMINAL IN
bore_diameter1.5000 INCHES NOMINAL IN
terminal_length1.580 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
terminal_diameter0.024 INCHES NOMINAL IN
cone_corner_radius0.1406 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
NSN3110-00-100-0238
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21156-1 · 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
•
CONE WIDTH: 1.1450 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 1.5000 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
MATERIAL: STEEL 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)
CONE WIDTH1.1450 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER1.5000 INCHES NOMINAL IN
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
R3459BInterchangeable
interchangeable cross-reference
interchangeable
92705Interchangeable
interchangeable cross-reference
interchangeable
2HE873Interchangeable
interchangeable cross-reference
interchangeable
7020562PT1Interchangeable
interchangeable cross-reference
interchangeable
A18105Interchangeable
interchangeable cross-reference
interchangeable
C70Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21156-1?
21156-1 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21156-1?
There are 20 known substitutes for 21156-1: R3459B, 92705, 2HE873 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21156-1?
21156-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0238. 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