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Technical Data Sheet
PartsTable / COMPONENT / ST2051
ST2051 ✓ 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,VARIABLE,AIR DIELECTRI. Key specifications include material: PORCELAIN BOWL, body_style: PLATE-MESHING, case_style: SQUARE, seal_width: 0.250 INCHES NOMINAL IN, shaft_type: ROUND SINGLE SHAFT, base_height: 0.080 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3104, 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
ST2051
NSN: 3110-00-100-3104
FSC: 3110
CAGE: 29930 — INTERNATIONAL HARVESTER CO AGRICULTURAL EQUIPMENT DIV (USA)
SPECIFICATIONS
materialPORCELAIN BOWL
body_stylePLATE-MESHING
case_styleSQUARE
seal_width0.250 INCHES NOMINAL IN
shaft_typeROUND SINGLE SHAFT
base_height0.080 INCHES NOMINAL IN
body_length3.844 INCHES NOMINAL IN
shaft_length0.375 INCHES NOMINAL SINGLE SHAFT IN
thread_class2B
bore_diameter1.0100 INCHES MINIMUM AND 1.0150 INCHES MAXIMUM IN
overall_width1.340 INCHES NOMINAL IN
thread_length0.160 INCHES NOMINAL IN
NSN3110-00-100-3104
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ST2051 · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
ASD1538Interchangeable
interchangeable cross-reference
interchangeable
3490AInterchangeable
interchangeable cross-reference
interchangeable
S637456Interchangeable
interchangeable cross-reference
interchangeable
455330SSRInterchangeable
interchangeable cross-reference
interchangeable
A12996Interchangeable
interchangeable cross-reference
interchangeable
A16653Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST2051?
ST2051 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace ST2051?
There are 23 known substitutes for ST2051: ASD1538, 3490A, S637456 and 20 more. Substitute compatibility should be verified for your specific system.
Is ST2051 still available?
ST2051 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