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7139-184 — CAP,PROTECTOR

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

7139-184: CAP,PROTECTOR.

The CAP,PROTECTOR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, antirotation/lubrication_type_and_quantity: 2 HOLE. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-107-1267, 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
7139-184
NSN: 3120-01-107-1267
NIINs: 011071267, 011455263, 013319418
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
antirotation/lubrication_type_and_quantity2 HOLE
NSN3120-01-107-1267
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 7139-184 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 2 HOLE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
ANTIROTATION/LUBRICATION TYPE AND QUANTITY2 HOLE
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
134958Reference document
Same NSN cross-reference
Reference document — Secondary reference
169990Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7139-184?
7139-184 is a CAP,PROTECTOR.
What parts can replace 7139-184?
There are 2 known substitutes for 7139-184: 134958, 169990. Substitute compatibility should be verified for your specific system.
What is the NSN for 7139-184?
7139-184 is cataloged in the U.S. Government catalog under NSN 3120-01-107-1267. 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.