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7520878 — RETAINER,GUN COMPONENT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

7520878: RETAINER,GUN COMPONENT.

The RETAINER,GUN COMPONENT is a the manufacturer industrial component. Key specifications include overall_height: 10.152 INCHES NOMINAL IN, overall_diameter: 2.225 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL; MK106 MOD0 MOUNT, end_item_identification: SHIP; WEAPON, criticality_code_justification: FEAT, part_name_assigned_by_controlling_agency: SYSTEM PINTLE. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-752-0878, 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
7520878
NSN: 3120-00-752-0878
NIINs: 007520878, 015089429
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
overall_height10.152 INCHES NOMINAL IN
overall_diameter2.225 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL; MK106 MOD0 MOUNT
end_item_identificationSHIP; WEAPON
criticality_code_justificationFEAT
part_name_assigned_by_controlling_agencySYSTEM PINTLE
NSN3120-00-752-0878
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 7520878 · 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
SUBSTITUTES & CROSS-REFERENCES 1
2200618Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7520878?
7520878 is a RETAINER,GUN COMPONENT.
What parts can replace 7520878?
There is 1 known substitute for 7520878: 2200618. Substitute compatibility should be verified for your specific system.
What is the NSN for 7520878?
7520878 is cataloged in the U.S. Government catalog under NSN 3120-00-752-0878. 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.