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Technical Data Sheet
PartsTable / COMPONENT / H791
H791 ✓ 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 material: STEEL OVERALL, bore_shape: STRAIGHT, body_length: 0.450 INCHES MAXIMUM IN, bore_diameter: 9.00 MILLIMETERS NOMINAL MM, overall_width: 8.0 MILLIMETERS NOMINAL MM, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8865, 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
H791
NSN: 3110-00-144-8865
FSC: 3110
CAGE: 35311 — AMERICAN STANDARD INC WESTINGHOUSE AIR BRAKE CO DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
body_length0.450 INCHES MAXIMUM IN
bore_diameter9.00 MILLIMETERS NOMINAL MM
overall_width8.0 MILLIMETERS NOMINAL MM
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeFULLY INCLOSED
load_directionRADIAL
surface_finishGROUND
inductance_typeFIXED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
shield_quantity2
NSN3110-00-144-8865
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: H791 · 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
•
BORE DIAMETER: 9.00 MILLIMETERS NOMINAL MM
•
LUBRICATION MATERIAL: GREASE
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 111 TYPE AND 3 CLASS AND 00 GRADE
•
OVERALL OUTSIDE DIAMETER: 26.00 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)
BORE DIAMETER9.00 MILLIMETERS NOMINAL MM
LUBRICATION MATERIALGREASE
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OVERALL
OVERALL WIDTH8.0 MILLIMETERS NOMINAL MM
NONDEFINITIVE SPEC/STD DATA111 TYPE AND 3 CLASS AND 00 GRADE
OVERALL OUTSIDE DIAMETER26.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
77039Interchangeable
interchangeable cross-reference
interchangeable
158044Interchangeable
interchangeable cross-reference
interchangeable
LM4250H/883BInterchangeable
interchangeable cross-reference
interchangeable
LM4250H-883BInterchangeable
interchangeable cross-reference
interchangeable
4048671Interchangeable
interchangeable cross-reference
interchangeable
H-791Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H791?
H791 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace H791?
There are 22 known substitutes for H791: 77039, 158044, LM4250H/883B and 19 more. Substitute compatibility should be verified for your specific system.
Is H791 still available?
H791 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