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Technical Data Sheet
PartsTable / COMPONENT / A2311-1
A2311-1 ✓ 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 phase: SINGLE INPUT, overall_width: 7.200 INCHES IN, overall_height: 8.300 INCHES IN, overall_length: 9.400 INCHES IN, mounting_method: FIXED BASE, fsc_application_data: ELECTRIC POWER SUPPLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2443, 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
A2311-1
NSN: 3110-00-198-2443
FSC: 3110
CAGE: 00658 — ABC ACQUISITION COMPANY DBA AETNA BEARING COMPANY (USA)
SPECIFICATIONS
phaseSINGLE INPUT
overall_width7.200 INCHES IN
overall_height8.300 INCHES IN
overall_length9.400 INCHES IN
mounting_methodFIXED BASE
fsc_application_dataELECTRIC POWER SUPPLY
current_rating_in_amps2.900 SINGLE INPUT
rotor_speed_rating_in_rpm1800.0 SINGLE FULL LOAD
length_of_shaft_from_housing2.500 INCHES SINGLE END IN
mounting_facility_type_and_quantity4 SLOT
shaft_center_to_mounting_surface_distance4.312 INCHES SINGLE END IN
connection_type_and_voltage_rating_in_volts52.0 LINE TO NEUTRAL SINGLE INPUT
NSN3110-00-198-2443
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A2311-1 · 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
•
SURFACE FINISH: GROUND
•
BORE SMALLEST DIAMETER: 1.6250 INCHES MINIMUM AND 1.6260 INCHES MAXIMUM IN
•
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
•
ALIGNMENT TYPE: RIGID
•
OVERALL OUTSIDE DIAMETER: 3.1100 INCHES MINIMUM AND 3.1400 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY RETAINER
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)
SURFACE FINISHGROUND
BORE SMALLEST DIAMETER1.6250 INCHES MINIMUM AND 1.6260 INCHES MAXIMUM IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
ALIGNMENT TYPERIGID
OVERALL OUTSIDE DIAMETER3.1100 INCHES MINIMUM AND 3.1400 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY RETAINER
MATERIALSTEEL WASHER
OVERALL HEIGHT0.7445 INCHES NOMINAL IN
STYLE DESIGNATORCLUTCH RELEASE, THRUST, LUBRICATED AND SEALED
MATERIALSTEEL BALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
20-2181Interchangeable
interchangeable cross-reference
interchangeable
311-001-031Interchangeable
interchangeable cross-reference
interchangeable
5905001410742Interchangeable
interchangeable cross-reference
interchangeable
GP7766Interchangeable
interchangeable cross-reference
interchangeable
R20838Interchangeable
interchangeable cross-reference
interchangeable
18-8-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A2311-1?
A2311-1 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace A2311-1?
There are 15 known substitutes for A2311-1: 20-2181, 311-001-031, 5905001410742 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A2311-1?
A2311-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2443. 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