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Technical Data Sheet
PartsTable / COMPONENT / DH811-78
DH811-78 ✓ 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

The SWITCHING SET,COMMUNICATIONS is a the manufacturer industrial component. Key specifications include material: STEEL COMP E51100 OR STEEL COMP E52100 OVERALL, alignment_type: RIGID, overall_height: 0.8075 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM IN, surface_finish: GROUND, style_designator: FLAT RACE SURFACE, STAGGERED BALL RETAINER, bore_smallest_diameter: 2.0060 INCHES MINIMUM AND 2.0080 INCHES MAXIMUM 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 3110-00-155-9162, 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
DH811-78
NSN: 3110-00-155-9162
FSC: 3110
CAGE: 44560 — OHIO GEAR DIV OF TOWMOTOR CORP (USA)
SPECIFICATIONS
materialSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
alignment_typeRIGID
overall_height0.8075 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM IN
surface_finishGROUND
style_designatorFLAT RACE SURFACE, STAGGERED BALL RETAINER
bore_smallest_diameter2.0060 INCHES MINIMUM AND 2.0080 INCHES MAXIMUM IN
overall_outside_diameter3.3418 INCHES MINIMUM AND 3.3438 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
thrust_directional_capability_designationSINGLE
NSN3110-00-155-9162
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: DH811-78 · 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 SMALLEST DIAMETER: 2.0060 INCHES MINIMUM AND 2.0080 INCHES MAXIMUM IN
•
OVERALL OUTSIDE DIAMETER: 3.3418 INCHES MINIMUM AND 3.3438 INCHES MAXIMUM IN
•
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
•
ALIGNMENT TYPE: RIGID
•
SURFACE FINISH: GROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
STYLE DESIGNATOR: FLAT RACE SURFACE, STAGGERED BALL RETAINER
TECHNICAL CHARACTERISTICS (FLIS)
BORE SMALLEST DIAMETER2.0060 INCHES MINIMUM AND 2.0080 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.3418 INCHES MINIMUM AND 3.3438 INCHES MAXIMUM IN
OVERALL HEIGHT0.8075 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
ALIGNMENT TYPERIGID
SURFACE FINISHGROUND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORFLAT RACE SURFACE, STAGGERED BALL RETAINER
MATERIALSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
A24Interchangeable
Target,bull's-Eye
interchangeable
A-24SET2Interchangeable
interchangeable cross-reference
interchangeable
76024Interchangeable
interchangeable cross-reference
interchangeable
17258Interchangeable
interchangeable cross-reference
interchangeable
5060-0750Interchangeable
interchangeable cross-reference
interchangeable
45244Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DH811-78?
DH811-78 is a SWITCHING SET,COMMUNICATIONS.
What parts can replace DH811-78?
There are 17 known substitutes for DH811-78: A24, A-24SET2, 76024 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DH811-78?
DH811-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-9162. 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