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AVBR78 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

AVBR78: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2500 INCHES NOMINAL IN, special_features: FRACTURED OUTER RING WITH TWO RETAINMENT RINGS ON OD OF OUTER RING. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-682-4501, 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
AVBR78
NSN: 3110-00-682-4501
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 81996 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN
load_directionRADIAL
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2500 INCHES NOMINAL IN
special_featuresFRACTURED OUTER RING WITH TWO RETAINMENT RINGS ON OD OF OUTER RING
style_designatorSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
overall_outside_diameter2.8744 INCHES MINIMUM AND 2.8750 INCHES MAXIMUM IN
NSN3110-00-682-4501
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AVBR78 · 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
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
•
OVERALL OUTSIDE DIAMETER: 2.8744 INCHES MINIMUM AND 2.8750 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
BORE DIAMETER: 2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
INNER RING WIDTH: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
OVERALL OUTSIDE DIAMETER2.8744 INCHES MINIMUM AND 2.8750 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
SPECIAL FEATURESFRACTURED OUTER RING WITH TWO RETAINMENT RINGS ON OD OF OUTER RING
BORE DIAMETER2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
INNER RING WIDTH0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 4
C3746BME5P515L02Reference document
Same NSN cross-reference
Reference document — Secondary reference
HPPBR78Reference document
Same NSN cross-reference
Reference document — Secondary reference
C3746BME5Reference document
Same NSN cross-reference
Reference document — Secondary reference
TCR37-46PReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AVBR78?
AVBR78 is a BEARING,BALL,AIRFRAME.
What parts can replace AVBR78?
There are 4 known substitutes for AVBR78: C3746BME5P515L02, HPPBR78, C3746BME5 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AVBR78?
AVBR78 is cataloged in the U.S. Government catalog under NSN 3110-00-682-4501. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.