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76788 — BEARING ASSEMBLY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

76788: BEARING ASSEMBLY.

The BEARING ASSEMBLY is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, attachment_method: ROUND HOLE, body_recess_depth: 0.438 INCHES NOMINAL IN, rim_surface_width: 0.250 INCHES NOMINAL IN, lip_inside_diameter: 2.031 INCHES NOMINAL IN, peripheral_diameter: 3.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-456-9627, 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
76788
NSN: 3120-00-456-9627
NIINs: 004569627, 007836017
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
attachment_methodROUND HOLE
body_recess_depth0.438 INCHES NOMINAL IN
rim_surface_width0.250 INCHES NOMINAL IN
lip_inside_diameter2.031 INCHES NOMINAL IN
peripheral_diameter3.875 INCHES NOMINAL IN
center_hole_diameter1.687 INCHES NOMINAL IN
cross-sectional_height0.500 INCHES NOMINAL IN
attachment_hole_diameter0.221 INCHES NOMINAL IN
attachment_feature_quantity4
flanged_body_outside_diameter2.310 INCHES NOMINAL IN
NSN3120-00-456-9627
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 76788 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 11.654 IN. DIA,2.750 IN. THK,MATERIAL ALUMINUM IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION11.654 IN. DIA,2.750 IN. THK,MATERIAL ALUMINUM IN
SUBSTITUTES & CROSS-REFERENCES 1
A51B9010-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 76788?
76788 is a BEARING ASSEMBLY.
What parts can replace 76788?
There is 1 known substitute for 76788: A51B9010-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 76788?
76788 is cataloged in the U.S. Government catalog under NSN 3120-00-456-9627. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.