PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 46257
46257 ✓ Verified by PartsTable
Jumbo · 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,CERAMIC DIELECTR. Key specifications include material: STEEL CORROSION RESISTING, construction: LAMINATED, outside_diameter: 0.440 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.300 INCHES NOMINAL IN, features_provided: NONSEPARABLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-143-2990, 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
46257
NSN: 3110-00-143-2990
FSC: 3110
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
constructionLAMINATED
outside_diameter0.440 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.300 INCHES NOMINAL IN
features_providedNONSEPARABLE
lamination_quantity5
lamination_thickness0.002 INCHES NOMINAL IN
material_document_and_classificationAMS5512 ASSN STD SINGLE MATERIAL RESPONSE
NSN3110-00-143-2990
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 46257 · Jumbo ⚠ 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 SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
STYLE DESIGNATOR: SOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
•
OVERALL OUTSIDE DIAMETER: 2.5000 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)
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
SPECIAL FEATURESONE OIL HOLE; OIL GROOVE ON ID
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
STYLE DESIGNATORSOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
OVERALL OUTSIDE DIAMETER2.5000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
OVERALL WIDTH1.7600 INCHES NOMINAL IN
BORE DIAMETER2.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
GGG-C-755Interchangeable
interchangeable cross-reference
interchangeable
D-661Interchangeable
interchangeable cross-reference
interchangeable
MC-10Interchangeable
interchangeable cross-reference
interchangeable
A1104144Interchangeable
interchangeable cross-reference
interchangeable
MC1R0Interchangeable
interchangeable cross-reference
interchangeable
MC1-0PFP0RM5PCTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 46257?
46257 is a CAPACITOR,FIXED,CERAMIC DIELECTR manufactured by Jumbo.
What parts can replace 46257?
There are 16 known substitutes for 46257: GGG-C-755, D-661, MC-10 and 13 more. Substitute compatibility should be verified for your specific system.
Is 46257 still available?
46257 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